Exhibit C

VOTING AND SUPPORT AGREEMENT

This Voting and Support Agreement (this “Agreement”) is made and entered into as of March 14, 2023, by and among Capstone Borrower, Inc., a Delaware corporation (“Parent”), and the stockholders of Cvent Holding Corp., a Delaware corporation (the “Company”), listed on Schedule A hereto (each, a “Stockholder” and, collectively, the “Stockholders”).

RECITALS

WHEREAS, concurrently with the execution and delivery of this Agreement, Parent, Capstone Merger Sub, Inc., a Delaware corporation and wholly owned subsidiary of Parent (“Merger Sub”), and the Company, are entering into an Agreement and Plan of Merger (as it may be amended, supplemented or otherwise modified from time to time, the “Merger Agreement”) that, among other things and subject to the terms and conditions set forth therein, provides for the merger of Merger Sub with and into the Company (the “Merger”), with the Company being the surviving corporation in the Merger;

WHEREAS, as of the date hereof, each Stockholder is the record and/or “beneficial owner” (within the meaning of Rule 13d-3 under the Exchange Act) of the number of shares of common stock, par value $0.0001 per share, of the Company (the “Company Stock”) set forth next to such Stockholder’s name on Schedule A hereto, being all of the shares of Company Stock owned of record or beneficially by such Stockholder as of the date hereof (with respect to such Stockholder, the “Owned Shares”, and the Owned Shares together with any additional shares of Company Stock that such Stockholder may acquire record and/or beneficial ownership of after the date hereof, such Stockholder’s “Covered Shares”);

WHEREAS, the Special Committee has unanimously (i) determined that it is in the best interests of the Company and its stockholders, and declared it advisable, to enter into the Merger Agreement providing for the Merger, in accordance with the General Corporation Law of the State of Delaware (the “DGCL”) upon the terms and subject to the conditions set forth therein; (ii) approved the execution and delivery of the Merger Agreement by the Company, the performance by the Company of its covenants and other obligations thereunder, and the consummation of the Merger upon the terms and subject to the conditions set forth therein; and (iii) resolved to recommend that the Company Board approve and adopt the Merger Agreement;

WHEREAS, the Company Board, acting upon the recommendation of the Special Committee, has unanimously (i) determined that it is in the best interests of the Company and its stockholders, and declared it advisable, to enter into the Merger Agreement providing for the Merger, in accordance with DGCL upon the terms and subject to the conditions set forth therein; (ii) approved the execution and delivery of the Merger Agreement by the Company, the performance by the Company of its covenants and other obligations thereunder, and the consummation of the Merger upon the terms and subject to the conditions set forth therein; (iii) resolved to recommend that the Company Stockholders adopt the Merger Agreement in accordance with the DGCL; and (iv) directed that the adoption of the Merger Agreement be submitted for consideration by the Company Stockholders at a meeting thereof; and

WHEREAS, as an inducement and condition for Parent and Merger Sub to enter into the Merger Agreement, each Stockholder has agreed to enter into this Agreement with respect to such Stockholder’s Covered Shares.

NOW, THEREFORE, in consideration of the foregoing and the respective representations, warranties, covenants and agreements set forth below and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto, intending to be legally bound, do hereby agree as follows:

1. Definitions. Capitalized terms used but not otherwise defined herein shall have the respective meanings ascribed to such terms in the Merger Agreement. When used in this Agreement, the following terms shall have the meanings assigned to them in this Section 1.

“Expiration Time” shall mean the earliest to occur of (a) the Effective Time or (b) such date and time as the Merger Agreement shall be validly terminated pursuant to Article VIII thereof.

“Transfer” shall mean (a) any direct or indirect offer, sale, assignment, encumbrance, pledge, gift, hedge, hypothecation, disposition, loan or other transfer, or entry into any option or other Contract, arrangement or understanding with respect to any offer, sale, assignment, encumbrance, pledge, hypothecation, disposition (whether by sale, liquidation, dissolution, dividend or distribution) or other transfer (by merger, consolidation, division, conversion, operation of Law or otherwise), of any Covered Shares or any interest in any Covered Shares (in each case other than this Agreement), (b) the deposit of such Covered Shares into a voting trust, the entry into a voting agreement or arrangement (other than this Agreement) with respect to such Covered Shares or the grant of any proxy or power of attorney with respect to such Covered Shares or (c) any Contract or commitment (whether or not in writing) to take any of the actions referred to in the foregoing clauses (a) or (b) above.

2. Agreement to Not Transfer the Covered Shares. Until the Expiration Time, each Stockholder agrees not to Transfer or cause or permit the Transfer of any of such Stockholder’s Covered Shares, other than with the prior written consent of Parent; provided, however, that any Stockholder may Transfer any such Covered Shares to (a) any other Stockholder or any Affiliate of any such Stockholder or (b) any beneficial owner of Stockholder, in each case only if the transferee of such Covered Shares evidences in a writing reasonably satisfactory to Parent such transferee’s agreement to be bound by and subject to the terms and provisions hereof to the same effect as such transferring Stockholder. Any Transfer or attempted Transfer of any Covered Shares in violation of this Section 2 shall be null and void and of no effect whatsoever. Each Stockholder agrees that it shall not, and shall cause each of its Affiliates not to, become a member of a “group” (as defined under Section 13(d) of the Exchange Act) with respect to any securities in the Company for the purpose of opposing or competing with or taking any actions inconsistent with the Transactions.

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3. Agreement to Vote the Covered Shares.

3.1 Until the Expiration Time, at every meeting of the Company’s stockholders at which any of the following matters are to be voted on (and at every adjournment or postponement thereof), and in connection with any action proposed to be taken by written consent of the Company Stockholders, each Stockholder shall vote (including via proxy) all of such Stockholder’s Covered Shares (or cause the holder(s) of record on any applicable record date to vote (including via proxy) all of such Stockholder’s Covered Shares), or deliver (or cause to be delivered) a written consent with respect to all of such Stockholder’s Covered Shares:

(a) in favor of the adoption of the Merger Agreement; and

(b) against (i) any action or agreement that would reasonably be expected to result in any condition set forth in Article VII of the Merger Agreement not being satisfied prior to the Termination Date, (ii) any Acquisition Proposal and (iii) any reorganization, recapitalization, liquidation or winding-up of the Company or any other extraordinary transaction involving the Company that would reasonably be expected to prevent, materially delay or materially impair the ability of the Company to consummate the transactions contemplated by the Merger Agreement.

3.2 Until the Expiration Time, at every meeting of the Company’s stockholders (and at every adjournment or postponement thereof), each Stockholder shall be represented in person or by proxy at such meeting (or cause the holder(s) of record on any applicable record date to be represented in person or by proxy at such meeting) in order for the Covered Shares to be counted as present for purposes of establishing a quorum.

3.3 Notwithstanding anything to the contrary in this Agreement, if at any time following the date hereof and prior to the Expiration Time a Governmental Authority of competent jurisdiction enters an order restraining, enjoining or otherwise prohibiting the Stockholders from taking any action pursuant to Section 3.1 or Section 3.2 of this Agreement, then the obligations of each Stockholder set forth in Section 3.1 or Section 3.2 of this Agreement shall be of no force and effect for so long as such order is in effect solely to the extent such order restrains, enjoins or otherwise prohibits such Stockholder from taking any such action.

4. [Reserved]

5. Waiver of Appraisal Rights and Certain Other Actions. Each Stockholder hereby waives all appraisal rights under Section 262 of the DGCL with respect to all of such Stockholder’s Covered Shares owned (beneficially or of record) by such Stockholder. In addition, each Stockholder hereby agrees not to commence or participate as a plaintiff in, any class action or other legal action (including any related settlement), derivative or otherwise, against Parent, the Company or any of their respective Subsidiaries or successors: (a) challenging the validity of, or seeking to enjoin or delay the operation of, any provision of this Agreement or the Merger Agreement (including any claim seeking to enjoin or delay the Closing) or (b) to the fullest extent permitted under applicable Law, alleging a breach of any duty of the Special Committee or the Company Board in connection with the Merger Agreement, this Agreement or the transactions contemplated thereby or hereby or, with respect to Parent, claims related to any such alleged breach.

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6. Documentation and Information. Except as required by applicable Law (including the filing of a Schedule 13D with the SEC which may include this Agreement as an exhibit thereto), each Stockholder shall not, and shall direct its Representatives not to, make any public announcement regarding this Agreement, the Merger Agreement or the transactions contemplated hereby or thereby without the prior written consent of Parent (such consent not to be unreasonably withheld, conditioned or delayed). Notwithstanding the foregoing, each Stockholder and its Affiliates may provide ordinary course communications regarding this Agreement, the Merger Agreement or the transactions contemplated hereby or thereby to existing or prospective general and limited partners, equity holders, members, managers and investors of any Affiliates of such Person, in each case, who are subject to customary confidentiality restrictions. Each Stockholder consents to and hereby authorizes Parent and Merger Sub to publish and disclose in all documents and schedules filed with the SEC, and any press release or other disclosure document that Parent or Merger Sub reasonably determines to be necessary in connection with the Merger and any transactions contemplated by the Merger Agreement, such Stockholder’s identity and ownership of the Covered Shares, the existence of this Agreement and the nature of such Stockholder’s commitments and obligations under this Agreement, and each Stockholder acknowledges that Parent and Merger Sub may, in Parent’s sole discretion, file this Agreement or a form hereof with the SEC or any other Governmental Authority. Each party hereto agrees to use its reasonable best efforts to promptly (a) give the other party any information it may reasonably require for the preparation of any such disclosure documents, and (b) notify the other party of any required corrections with respect to any written information supplied by it specifically for use in any such disclosure document, if and to the extent that such party shall become aware that any such information shall have become false or misleading in any material respect.

7. No Solicitation.

7.1 No Solicitation or Negotiation. Each Stockholder shall not, and shall not authorize or permit any of its Representatives to, directly or indirectly, (a) solicit, initiate, propose or knowingly induce the making, submission or announcement of, or knowingly encourage, facilitate or assist, any proposal or offer with respect to, that constitutes or could reasonably be expected to lead to, an Acquisition Proposal; (b) furnish to any Person (other than Parent, Merger Sub or any designees of Parent or Merger Sub) any non-public information relating to the Company or any of its Subsidiaries or afford to any Person access to the business, properties, assets, books, records or personnel, of the Company or any of its Subsidiaries, in any such case with the intent to knowingly induce the making, submission or announcement of, or to knowingly encourage or knowingly facilitate, any proposal or offer with respect to, that constitutes or would reasonably be expected to lead to an Acquisition Proposal; (c) participate or engage in discussions or negotiations with any Person with respect to an Acquisition Proposal (or inquiries, proposals or offers that would reasonably be expected to lead to an Acquisition Proposal); (d) approve, endorse or recommend an Acquisition Proposal; or (e) approve, recommend or enter into, or propose to approve, recommend to enter into, any Alternative Acquisition Agreement. Following the execution of this Agreement, each Stockholder shall immediately cease and shall cause each of its Subsidiaries and use its reasonable best efforts to cause its and their respective Representatives to immediately cease any discussions, communications or negotiations with any Person (other than the Parties and their respective Representatives) in connection with an Acquisition Proposal (or proposals or offers that could reasonably be expected to lead to an Acquisition Proposal) by such Person, in each case that exists as of the date of this Agreement. Notwithstanding anything to the contrary in this Section 7.1, each Stockholder may engage in such activities solely to the extent that the Company is permitted to engage in such activities pursuant to Section 5.3(b) of the Merger Agreement.

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7.2 Notice. From the date of this Agreement until the earlier to occur of the termination of the Merger Agreement pursuant to Article VIII thereof and the Effective Time, each Stockholder shall as promptly as reasonably practicable (and, in any event, within 48 hours) notify Parent if any Acquisition Proposal or any offers or proposals that would reasonably be expected to lead to an Acquisition Proposal are received by such Stockholder or any of its Representatives. Such notice must include (a) the identity of the Person or Group making such Acquisition Proposal; and (b) a summary of the material terms and conditions (including, for the avoidance of doubt, the form and amount of consideration and proposed financing arrangements) of any such Acquisition Proposal and, to the extent submitted in writing, copies of any such Acquisition Proposal. Thereafter, the Stockholders must keep Parent reasonably informed, on a prompt basis (and, in any event, within 48 hours), of the status and material terms of any such Acquisition Proposal (including any amendments, revisions or other changes thereto) and the status of any related discussions or negotiations. Notwithstanding the foregoing, the Stockholders shall not be required to notify Parent of any discussions or negotiations to the extent the Company has notified Parent thereof.

8. Termination of Affiliate Contracts. The Company and the Stockholders hereby agree to terminate each of the Contracts set forth on Schedule B hereto (the “Affiliate Contracts”), effective as of immediately prior to the Closing. Each of the Company and the Stockholders hereby waive any rights it may have now or in the future pursuant to the Affiliate Contracts, including rights that in any way conflict with or otherwise prohibit or restrict the termination contemplated hereby, including any notice or consent requirements. The Company and the Stockholders acknowledge and agree that, from and after the termination of the Affiliate Contract, and, notwithstanding any survival or termination provisions in the Affiliate Contract or in any agreements governing the Affiliate Contract, (a) none of the Company or the Stockholders or any of their respective successors in interest or Affiliates (including, in the case of the Company, Parent or any of its Affiliates from and after the Closing) will have any further right, duty, obligation or liability with respect thereto (including liability arising from such termination) under the Affiliate Contract, (b) no further amounts shall be due or payable by either party hereto to the other party hereto under the Affiliate Contract and (c) the Affiliate Contract shall be of no further force or effect. The Company and the Stockholders agree to cooperate at all times from and after the execution and delivery of this Agreement with respect to the matters described herein, and to execute such further assignments, releases, acceptances, amendments, notifications, consents and other documents as may be reasonably requested by the other party for the purpose of giving effect to, evidencing or giving notice of, the transactions contemplated by this Section 8.

9. Proxy Statement; SEC Filings and Schedule 13D.

(a) Each Stockholder will provide information reasonably requested by the Company or Parent in connection with the preparation of any SEC filing Parent or the Company is required to make in connection with the Merger (including any amendment or supplement thereto, the “SEC Filings”). To the knowledge of each Stockholder, the information supplied by such Stockholder for inclusion or incorporation by reference in the Proxy Statement, or any SEC

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Filing will not, at the time that such information is provided, contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary in order to make the statements therein, in light of the circumstances under which they are made, not misleading. Promptly after the execution of this Agreement, Parent and the Stockholders shall cooperate to prepare and file with the SEC one or more disclosure statements on Schedule 13D or amendments or supplements thereto, as applicable (such disclosure statements, including any amendments or supplements thereto, the “Schedule 13Ds”) relating to the Merger Agreement and this Agreement and the transactions contemplated hereby and thereby. Parent shall (i) provide the Stockholders and the Stockholders’ counsel a reasonable opportunity to review drafts of the SEC Filings prior to filing the SEC Filings with the SEC and (ii) consider in good faith all comments thereto reasonably proposed by the Stockholders, their outside counsel and other Representatives. Parent and the Stockholders shall (A) provide each other and their respective counsel a reasonable opportunity to review drafts of the Schedule 13Ds prior to filing the Schedule 13Ds with the SEC and (B) consider in good faith all comments thereto reasonably proposed by the other parties, their outside counsel and their other Representatives, it being understood that failure to provide such prior review or to incorporate any comments shall not in any way limit or preclude Parent or the Stockholders, as applicable, from amending any such Schedule 13D.

(b) Parent and the Stockholders will each use its reasonable best efforts to furnish all information concerning such Party and its controlled Affiliates to the other parties that is reasonably necessary for the preparation and filing of the Proxy Statement and the SEC Filings, and provide such other assistance, as may be reasonably requested by such other Party to be included therein and will otherwise reasonably assist and cooperate with the other in the preparation, filing and distribution of the Proxy Statement and the SEC Filings and the resolution of any comments to either received from the SEC.

10. Fiduciary Duties. Each Stockholder is entering into this Agreement solely in its, his or her capacity as the record holder or beneficial owner of such Stockholder’s Covered Shares. Nothing in this Agreement shall in any way attempt to limit or affect any actions taken by any of such Stockholder’s or its, his or her Affiliates’ designee(s) or beneficial owner(s) serving on the Company Board or any such Stockholder or in his or her capacity as a director, officer or employee of the Company or any of its Affiliates, from complying with his or her fiduciary obligations while acting in such designee’s or beneficial owner’s capacity as a director, officer or employee of the Company. No action taken (or omitted to be taken) in any such capacity as a director, officer or employee shall be deemed to constitute a breach of this Agreement.

11. Representations and Warranties of the Stockholders. Each Stockholder hereby represents and warrants to Parent that:

11.1 Due Authority. Such Stockholder has the full power and capacity to make, enter into and carry out the terms of this Agreement. To the extent such Stockholder is not an individual, such Stockholder is duly organized, validly existing and in good standing in accordance with the laws of its jurisdiction of formation, as applicable, and the execution and delivery of this Agreement, the performance of such Stockholder’s obligations hereunder, and the consummation of the transactions contemplated hereby have been validly authorized, and, assuming the accuracy of the representations and warranties set forth in Section 12.2(b), no other consents or authorizations are required to give effect to this Agreement or the transactions contemplated by

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this Agreement. This Agreement has been duly and validly executed and delivered by such Stockholder and constitutes a valid and binding obligation of such Stockholder enforceable against it in accordance with its terms, except as enforcement may be limited by applicable bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium and other similar Laws affecting or relating to creditors’ rights generally and equitable remedies of specific performance and injunctive and other forms of equitable relief may be subject to equitable defenses and to the discretion of the court before which any proceeding therefor may be brought.

11.2 Ownership of the Covered Shares. (a) Such Stockholder is, as of the date hereof, the beneficial or record owner of such Stockholder’s Covered Shares, all of which are free and clear of any liens, other than those created by this Agreement, the Merger Agreement, the Organizational Documents of the Company, the Investor Rights Agreement and the Amended and Restated Registration Rights Agreement, each dated as of December 8, 2021, by and among the Company and the investors named therein, or arising under applicable securities Laws, and (b) such Stockholder has sole or, with an Affiliate of such Stockholder, shared voting power over all of the Covered Shares beneficially owned by such Stockholder. Such Stockholder has not entered into any agreement to Transfer any Covered Shares and no Person (other than the Stockholder and any Person under the control of the Stockholder) has a right to acquire any of the Covered Shares held by the Stockholder. As of the date hereof, such Stockholder does not own, beneficially or of record, any shares of Company Stock or other voting shares of the Company (or any securities convertible, exercisable or exchangeable for, or rights to purchase or acquire, any shares of Company Stock or other voting shares of the Company) other than the Owned Shares.

11.3 No Conflict; Consents.

(a) The execution and delivery of this Agreement by such Stockholder does not, and the performance by such Stockholder of its, his or her obligations under this Agreement does not and will not: (i) violate any Laws applicable to such Stockholder, (ii) result in any breach of or constitute a default under any Contract or obligation to which such Stockholder is a party or by which such Stockholder is subject, other than those created by this Agreement, or (iii) to the extent such Stockholder is not an individual, violate or conflict with any provision of the Organizational Documents of such Stockholder, in the case of each of clauses (i) through (iii), except for such violations, breaches or defaults as would not prevent, materially delay or materially impair the ability of such Stockholder to perform its, his or her obligations under this Agreement.

(b) No consent, approval, order or authorization of, or registration, declaration or, except as required under the HSR Act, any competition, antitrust and investment laws or regulations of foreign jurisdictions or by the rules and regulations promulgated under the Exchange Act, filing with, any Governmental Authority or any other Person, is required by or with respect to such Stockholder in connection with the execution and delivery of this Agreement or the consummation by such Stockholder of the transactions contemplated hereby.

11.4 Absence of Litigation. As of the date hereof, there is no legal action pending against, or, to the knowledge of such Stockholder, threatened against or affecting such Stockholder that would reasonably be expected to prevent, materially delay or materially impair the ability of such Stockholder to perform its, his or her obligations under this Agreement.

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11.5 Reliance. Such Stockholder has been represented by or had the opportunity to be represented by independent counsel of its own choosing and has had the right and opportunity to consult with its attorney, and to the extent, if any, that such Stockholder desired, such Stockholder availed itself of such right and opportunity. Such Stockholder understands and acknowledges that Parent and Merger Sub are entering into the Merger Agreement in reliance upon such Stockholder’s execution, delivery and performance of this Agreement. Such Stockholder (individually and on behalf of its Affiliates and each of their respective Representatives) hereby agrees and acknowledges that, in entering into this Agreement and agreeing to consummate the transactions contemplated hereby, such Stockholder, its Affiliates (other than the Company and its Subsidiaries) and each of their respective Representatives are relying solely on the representations and warranties of Parent set forth in Section 12 of this Agreement and are not relying on any other representation, warranty, statement or material.

11.6 Brokers. No broker, finder, financial advisor, investment banker or other agent is entitled to any brokerage, finder’s, financial advisor’s, investment banking or other similar fee or commission payable by the Company or any of its Subsidiaries in connection with the transactions contemplated hereby based upon arrangements made by or, to the knowledge of such Stockholder, on behalf of such Stockholder.

12. Representations and Warranties of Parent. Parent hereby represents and warrants to the Stockholders that:

12.1 Due Authority. Parent has the full power and capacity to make, enter into and carry out the terms of this Agreement. Parent is duly organized, validly existing and in good standing in accordance with the laws of its jurisdiction of formation. The execution and delivery of this Agreement, the performance of Parent’s obligations hereunder, and the consummation of the transactions contemplated hereby has been validly authorized, and assuming the accuracy of the representations and warranties set forth in Section 11.3(b), no other consents or authorizations are required to give effect to this Agreement or the transactions contemplated by this Agreement. This Agreement has been duly and validly executed and delivered by Parent and constitutes a valid and binding obligation of Parent enforceable against it in accordance with its terms, except as enforcement may be limited by general principles of equity whether applied in a court of law or a court of equity and by bankruptcy, insolvency and similar Laws affecting creditors’ rights and remedies generally.

12.2 No Conflict; Consents.

(a) The execution and delivery of this Agreement by Parent does not, and the performance by Parent of its obligations under this Agreement does not and will not: (i) violate any Laws applicable to Parent, (ii) result in any breach of or constitute a default under any Contract or obligation to which Parent is a party or by which Parent is subject, other than those created by this Agreement, or (iii) violate or conflict with any provision of the Organizational Documents of Parent, in the case of each of clauses (i) through (iii) except for such violations, breaches or defaults as would not prevent, materially delay or materially impair the ability of Parent to perform its obligations under this Agreement.

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(b) No consent, approval, order or authorization of, or registration, declaration or, except as required under the HSR Act, any competition, antitrust and investment laws or regulations of foreign jurisdictions or by the rules and regulations promulgated under the Exchange Act, filing with, any Governmental Authority or any other Person, is required by or with respect to Parent in connection with the execution and delivery of this Agreement or the consummation by Parent of the transactions contemplated hereby.

12.3 Absence of Litigation. As of the date hereof, there is no legal action pending against, or, to the knowledge of Parent, threatened against or affecting Parent that would reasonably be expected to prevent, materially delay or materially impair the ability of Parent to perform its obligations under this Agreement.

13. Miscellaneous.

13.1 No Ownership Interest. Nothing contained in this Agreement shall be deemed to vest in Parent any direct or indirect ownership or incidence of ownership of or with respect to the Covered Shares. All rights, ownership and economic benefits of and relating to the Covered Shares shall remain vested in and belong to the Stockholders, and Parent shall have no authority to direct any Stockholder in the voting or disposition of any of the Covered Shares, except as otherwise provided herein.

13.2 Certain Adjustments. In the event of a stock split, stock dividend or distribution, or any change in the Company Stock by reason of any split-up, reverse stock split, recapitalization, combination, reclassification, exchange of shares or the like, the terms “Company Stock” and “Covered Shares” shall be deemed to refer to and include such shares as well as all such stock dividends and distributions and any securities into which or for which any or all of such shares may be changed or exchanged or which are received in such transaction.

13.3 Amendments and Modifications. This Agreement may not be modified, amended, altered or supplemented except upon the execution and delivery of a written agreement executed by all of the parties hereto.

13.4 Expenses. All costs and expenses incurred in connection with this Agreement shall be paid by the party incurring such cost or expense.

13.5 Notices. All notices and other communications hereunder shall be in writing and shall be deemed given if delivered personally, by email (with confirmation of receipt) or sent by a nationally recognized overnight courier service, such as Federal Express, to the parties at the following addresses (or at such other address for a party as shall be specified by like notice made pursuant to this Section 13.5):

(a) if to the Stockholders, to:

c/o Vista Equity Partners Management, LLC

Four Embarcadero Center, 20th Floor

San Francisco, CA 94111

Attention: [***]

Email: [***]

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(b) if to Parent, to:

Capstone Borrower, Inc.

c/o Blackstone, Inc.

345 Park Avenue

New York, NY 10145

Attention: [***]

Email:      [***]

with a copy (which shall not constitute notice) to:

Simpson Thacher & Bartlett LLP

425 Lexington Avenue

New York, NY 10017

Attention: [***]

Email:      [***]

(c) if to Company, to:

Cvent Holding Corp.

1765 Greensboro Station Place

Tysons, VA 22102

Attention: [***]

E-mail:     [***]

with a copy (which shall not constitute notice) to:

Kirkland & Ellis LLP

601 Lexington Avenue

New York, NY 10022

Attention: [***]

Email:      [***]

13.6 Enforcement; Exclusive Jurisdiction.

(a) The rights and remedies of the parties shall be cumulative with and not exclusive of any other remedy conferred hereby. The parties agree that irreparable damage would occur and that the parties would not have any adequate remedy at law in the event that any of the provisions of this Agreement were not performed in accordance with their specific terms or were otherwise breached. It is accordingly agreed that the parties hereto shall be entitled to an injunction or injunctions to prevent breaches of this Agreement and to enforce specifically the terms and provisions of this Agreement, this being in addition to any other remedy to which they are entitled at law or in equity.

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(b) In addition, each of the parties (i) consents to submit itself, himself or herself, and hereby submits itself, himself or herself, to the personal jurisdiction of the Court of Chancery of the State of Delaware and any federal court located in the State of Delaware, or, if neither of such courts has subject matter jurisdiction, any state court of the State of Delaware having subject matter jurisdiction, in the event any dispute arises out of this Agreement or any of the transactions contemplated by this Agreement, (ii) agrees that it will not attempt to deny or defeat such personal jurisdiction by motion or other request for leave from any such court, and agrees not to plead or claim any objection to the laying of venue in any such court or that any judicial proceeding in any such court has been brought in an inconvenient forum, (iii) agrees that it will not bring any action relating to this Agreement or any of the transactions contemplated by this Agreement in any court other than the Court of Chancery of the State of Delaware and any federal court located in the State of Delaware, or, if neither of such courts has subject matter jurisdiction, any state court of the State of Delaware having subject matter jurisdiction and (iv) consents to service of process being made through the notice procedures set forth in Section 13.5.

13.7 Waiver of Jury Trial. EACH PARTY ACKNOWLEDGES AND AGREES THAT ANY CONTROVERSY THAT MAY ARISE PURSUANT TO THIS AGREEMENT IS LIKELY TO INVOLVE COMPLICATED AND DIFFICULT ISSUES, AND THEREFORE EACH PARTY HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES ANY RIGHT THAT SUCH PARTY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY LEGAL PROCEEDING (WHETHER FOR BREACH OF CONTRACT, TORTIOUS CONDUCT OR OTHERWISE) DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY. EACH PARTY ACKNOWLEDGES AND AGREES THAT (I) NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER; (II) IT UNDERSTANDS AND HAS CONSIDERED THE IMPLICATIONS OF THIS WAIVER; (III) IT MAKES THIS WAIVER VOLUNTARILY; AND (IV) IT HAS BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION 13.7.

13.8 Documentation and Information. Each Stockholder consents to and authorizes the publication and disclosure by Parent and the Company of such Stockholder’s identity and holding of the Covered Shares, and the terms of this Agreement (including, for the avoidance of doubt, the disclosure of this Agreement), in any press release, the Proxy Statement and any other disclosure document required in connection with the Merger Agreement, the Merger and the Transactions.

13.9 Further Assurances. Each Stockholder agrees, from time to time, at the reasonable request of Parent and without further consideration, to execute and deliver such additional documents and take all such further action as may be reasonable required to consummate and make effective, in the most expeditious manner practicable, the transactions contemplated by this Agreement.

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13.10 Entire Agreement. This Agreement constitutes the entire agreement and supersedes all prior agreements and understandings, both written and oral, among the parties with respect to the subject matter hereof. For the avoidance of doubt, nothing in this Agreement shall be deemed to amend, alter or modify, in any respect, any of the provisions of the Merger Agreement.

13.11 Reliance. Each Stockholder understands and acknowledges that Parent and Merger Sub are entering into the Merger Agreement in reliance upon such Stockholder’s execution and delivery of this Agreement.

13.12 Interpretation. The words “hereof”, “herein” and “hereunder” and words of like import used in this Agreement shall refer to this Agreement as a whole and not to any particular provision of this Agreement. The descriptive headings used herein are inserted for convenience of reference only and are not intended to be part of or to affect the meaning or interpretation of this Agreement. References to Articles, Sections, Exhibits and Schedules are to Articles, Sections, Exhibits and Schedules of this Agreement unless otherwise specified. All Exhibits and Schedules annexed hereto or referred to herein are hereby incorporated in and made a part of this Agreement as if set forth in full herein. Any capitalized terms used in any Exhibit or Schedule but not otherwise defined therein, shall have the meaning as defined in this Agreement. Any singular term in this Agreement shall be deemed to include the plural, and any plural term the singular. The definitions contained in this Agreement are applicable to the masculine as well as to the feminine and neuter genders of such term. Whenever the words “include”, “includes” or “including” are used in this Agreement, they shall be deemed to be followed by the words “without limitation”, whether or not they are in fact followed by those words or words of like import. “Writing”, “written” and comparable terms refer to printing, typing and other means of reproducing words (including electronic media) in a visible form. References to any statute shall be deemed to refer to such statute and to any rules or regulations promulgated thereunder. References to any Person include the successors and permitted assigns of that Person. References from or through any date mean, unless otherwise specified, from and including such date or through and including such date, respectively. References to any period of days will be deemed to be to the relevant number of calendar days unless otherwise specified. The word “extent” in the phrase “to the extent” means the degree to which a subject or other thing extends, and does not simply mean “if.” When used in this Agreement, references to “$” or “Dollars” are references to U.S. dollars. Unless the context otherwise requires, any definition of or reference to any Law or any provision of any Law herein shall be construed as referring to such Law as from time to time amended, supplemented or modified, including by succession of comparable successor Laws and references to the rules and regulations promulgated thereunder or pursuant thereto. References to any agreement or Contract are to that agreement or Contract as amended, modified or supplemented (including by waiver or consent) from time to time. The parties agree that they have been represented by legal counsel during the negotiation, execution and delivery of this Agreement and therefore waive the application of any Law, regulation, holding or rule of construction providing that ambiguities in an agreement or other document will be construed against the party drafting such agreement or document.

13.13 Assignment. Neither this Agreement nor any of the rights, interests or obligations hereunder shall be assigned by any of the parties hereto in whole or in part (whether by operation of Law or otherwise) without the prior written consent of the other parties, and any such assignment without such consent shall be null and void. This Agreement shall be binding upon, inure to the benefit of and be enforceable by the parties hereto and their respective successors and permitted assigns.

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13.14 Severability. In the event that any provision of this Agreement, or the application thereof, becomes or is declared by a court of competent jurisdiction to be illegal, void or unenforceable, the remainder of this Agreement will continue in full force and effect and the application of such provision to other Persons or circumstances will be interpreted so as reasonably to effect the intent of the parties. The parties further agree to replace such void or unenforceable provision of this Agreement with a valid and enforceable provision that will achieve, to the extent possible, the economic, business and other purposes of such void or unenforceable provision.

13.15 Counterparts. This Agreement and any amendments hereto may be executed in one or more counterparts, all of which will be considered one and the same agreement and will become effective when one or more counterparts have been signed by each of the parties and delivered to the other parties, it being understood that all parties need not sign the same counterpart. Any such counterpart, to the extent delivered by fax or .pdf, .tif, .gif, .jpg or similar attachment to electronic mail (any such delivery, an “Electronic Delivery”), will be treated in all manner and respects as an original executed counterpart and will be considered to have the same binding legal effect as if it were the original signed version thereof delivered in person. No party may raise the use of an Electronic Delivery to deliver a signature, or the fact that any signature or agreement or instrument was transmitted or communicated through the use of an Electronic Delivery, as a defense to the formation of a contract, and each party forever waives any such defense, except to the extent such defense relates to lack of authenticity.

13.16 Governing Law. This Agreement and all actions, proceedings, causes of action, claims or counterclaims (whether based on contract, tort, statute or otherwise) based upon, arising out of or relating to this Agreement or the actions of the parties hereto in the negotiation, administration, performance and enforcement thereof (including any claim or cause of action based upon, arising out of or related to any representation or warranty made in connection with this Agreement or as an inducement to enter into this Agreement), shall be governed by, and construed in accordance with the Laws of the State of Delaware, including its statutes of limitations, without giving effect to any choice or conflict of Laws provision or rule (whether of the State of Delaware or any other jurisdiction) that would cause the application of the Laws, including any statutes of limitations, of any jurisdiction other than the State of Delaware.

13.17 Non-Survival of Representations and Warranties. None of the representations and warranties in this Agreement or in any schedule, instrument or other document delivered pursuant to this Agreement shall survive the Effective Time or the termination of this Agreement. This Section 13.17 shall not limit any covenant or agreement contained in this Agreement that by its terms is to be performed in whole or in part after the Effective Time or the termination of this Agreement.

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13.18 Termination. This Agreement shall automatically terminate without further action by any of the parties hereto and shall have no further force or effect as of the earliest to occur of (a) the Expiration Time, (b) a Company Board Recommendation Change in accordance with the Merger Agreement or (c) with respect to any Stockholder, the election of such Stockholder in its, his or her sole discretion to terminate this Agreement promptly following any amendment of any term or provision of the original unamended Merger Agreement dated as of the date hereof, without the prior written consent of such Stockholder, that reduces or changes the form of consideration payable pursuant to such Merger Agreement; provided that the provisions of this Section 13 shall survive any such termination. Notwithstanding the foregoing, termination of this Agreement shall not prevent any party hereto from seeking any remedies (at law or in equity) against any other party for that party’s breach of any of the terms of this Agreement prior to the date of termination.

[Signature page follows]

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IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed and delivered as of the date first above written.

CAPSTONE BORROWER, INC.
By:	/s/ David Schwartz
	Name: David Schwartz
	Title:   Vice President

VISTA EQUITY PARTNERS FUND VI, L.P.
By:	Vista Equity Partners Fund VI GP, L.P.
Its:	General Partner
By:	VEPF VI GP, Ltd.
Its:	General Partner
By:	/s/ Robert F. Smith
	Name: Robert F. Smith
	Title:   Director

VISTA EQUITY PARTNERS FUND VI-A, L.P.
By:	Vista Equity Partners Fund VI GP, L.P.
Its:	General Partner
By:	VEPF VI GP, Ltd.
Its:	General Partner
By:	/s/ Robert F. Smith
	Name: Robert F. Smith
	Title:   Director
VEPF VI FAF, L.P.
By:	Vista Equity Partners Fund VI GP, L.P.
Its:	General Partner
By:	VEPF VI GP, Ltd.
Its:	General Partner
By:	/s/ Robert F. Smith
	Name: Robert F. Smith
	Title:   Director

[Signature Page to Voting and Support Agreement]

VEPF III AIV VI, L.P.
By:	Vista Equity Partners Fund III GP, LLC
Its:	General Partner
By:	VEP Group, LLC
Its:	Senior Managing Member
By:	/s/ Robert F. Smith
	Name: Robert F. Smith
	Title:   Managing Member
VEPF III AIV VI-A, L.P.
By:	Vista Equity Partners Fund III GP, LLC
Its:	General Partner
By:	VEP Group, LLC
Its:	Senior Managing Member
By:	/s/ Robert F. Smith
	Name: Robert F. Smith
	Title:   Managing Member
VEPF IV AIV VII, L.P.
By:	Vista Equity Partners Fund IV GP, LLC
Its:	General Partner
By:	VEP Group, LLC
Its:	Senior Managing Member
By:	/s/ Robert F. Smith
	Name: Robert F. Smith
	Title:   Managing Member

[Signature Page to Voting and Support Agreement]

VEPF IV AIV VII-A, L.P.
By:	Vista Equity Partners Fund IV GP, LLC
Its:	General Partner
By:	VEP Group, LLC
Its:	Senior Managing Member
By:	/s/ Robert F. Smith
	Name: Robert F. Smith
	Title:   Managing Member
VFF I AIV IV, L.P.
By:	Vista Foundation Fund I GP, LLC
Its:	General Partner
By:	VEP Group, LLC
Its:	Senior Managing Member
By:	/s/ Robert F. Smith
	Name: Robert F. Smith
	Title:   Managing Member
VFF I AIV IV-A, L.P.
By:	Vista Foundation Fund I GP, LLC
Its:	General Partner
By:	VEP Group, LLC
Its:	Senior Managing Member
By:	/s/ Robert F. Smith
	Name: Robert F. Smith
	Title:   Managing Member

[Signature Page to Voting and Support Agreement]