Digital Realty the trusted foundation | powering your digital ambitions Global. Connected. Sustainable. 2Q21 FINANCIAL RESULTS JULY 2021

| 2 Navigating the Future Sustainable Growth for Customers, Shareholders and Employees GLOBAL CONNECTED SUSTAINABLE Selling GLOBALLY… Supporting LOCALLY EMEA APAC AMERICAS A Digital Realty and Brookfield Infrastructure JV DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021

| 3 Serving a Social Purpose Delivering Sustainable Growth for All Stakeholders Awarded 2021 Green Lease Leader for third consecutive year ENVIRONMENTAL Led disaster recovery assistance and community reinvestment programs: committed to enhancing the well‐ being of shareholders, customers, employees, vendors and communities Demonstrated senior leadership and employee commitment to Diversity, Equity & Inclusion; signed CEO Action Pledge for diversity; co‐chair Nareit’s diversity initiative Adopted the Rooney Rule and amended corporate governance guidelines to clarify that director candidate pools must include candidates with diversity of race, ethnicity and gender SOCIAL Instituted minimum stock ownership requirements for directors and management Established proxy access for shareholders and provided shareholders the ability to propose amendments to the bylaws Enhanced Board diversity with the addition of three new Directors 2015 2019 2018 GOVERNANCE 2021 Formalized ESG oversight under the Nominating & Corporate Governance Committee Published third annual ESG report in June 2021 Published EEO‐1 report, providing transparency on the racial and gender composition of the U.S. workforce Committed to reducing direct emissions by 68% and indirect emissions by 24% by 2030 Named 2021 EPA ENERGY STAR® Partner of the Year for second consecutive year 2020 DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021

| 4 Note: As of June 30, 2021. Global Platform Expanding Global Platform Supporting Customer Growth 4,000+ Customers 170,000+ Cross‐Connects 47 Metro Areas DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021 Singapore Seoul Marseille Mumbai Toronto

Enterprise workflows typically use 400+ data sources (3) exchanged across 27 cloud products (4) | 5 Enterprises Struggle to Share Data Digital Transformation Exacerbates Complexity Global Data Center Platform Provides Solution DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021 Leaders Major Players Contenders Participants Equinix Digital Realty NTT Cyxtera Telehouse Iron Mountain QTS Vantage CyrusOne STRATEGIES CAPABILITIES (5) <35% of enterprises successfully meeting their data‐sharing objectives (2) 1) Projected compound annual growth in the intensity of data gravity, as measured in gigabytes per second, from 2020‐2024. Projections according to Digital Realty’s proprietary Data Gravity Index DGx™ report as of December 2020. Patent pending. 2) Gartner CDO Agenda 2021: Influence and Impact of Successful CDOs in the Sixth Annual CDO Survey, March 2021. 3) IDG Marketpulse Survey Optimizing Business Analytics In The Cloud, November 2020. 4) Intricately State of Datacenter, Cloud and Applications Market Report, 2020. 5) IDC MarketScape: Worldwide Data Center Colocation and Interconnection Services, 2021. Digital Transformation Driving Data Center Demand PlatformDIGITAL® Poised to Capitalize New York Data Gravity CAGR (1) 132% London Data Gravity CAGR (1) 129% Zurich Data Gravity CAGR (1) 135% ™ Frankfurt Data Gravity CAGR (1) 144% Seoul Data Gravity CAGR (1) 152% Mumbai Data Gravity CAGR (1) 156% Singapore Data Gravity CAGR (1) 200%

Financial Results | 6 DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021

Digital Transformation Driving Steady Demand Global Full‐Product Spectrum Provides Broadest Solutions Note: Darker shading represents interconnection bookings. Second‐quarter bookings are highlighted in lighter blue. Totals may not add up due to rounding. 1) Other includes Powered Base Building® shell capacity as well as storage and office space within fully improved data center facilities. 2Q21 BOOKINGS 0‐1 MW $41.2 mm > 1 MW $59.0 mm OTHER (1) $0.6 mm INTERCONNECTION $12.6 mm TOTAL BOOKINGS $113.4 mm HISTORICAL BOOKINGS ANNUALIZED GAAP BASE RENT $ in millions 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 | 7 DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021 $0 $50 $100 $150

47% of total bookings from 0‐1 MW + interconnection 44% of total bookings outside the Americas Connected Data Communities Attracting New Logos | 8 109 new logos Computer Technology Cloud & Media Provider Customer Data Platform Digital Healthcare & Biotech Financial Services European Broadcaster Note: For quarter ended June 30, 2021. DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021

$197M $82M $283M $14M $6M $8M $24M 2021 2022 2023 1Q21 Backlog Top‐Line Step Function Healthy Backlog Sets a Solid Foundation | 9 Note: Totals may not add up due to rounding. 1) Amounts shown represent GAAP annualized base rent from leases signed. 2) Amounts shown represent GAAP annualized base rent from leases signed, but not yet commenced, based on estimated future commencement date at time of signing. Actual commencement dates may vary. Digital Realty Backlog Unconsolidated Joint Venture Backlog Digital Realty Backlog Unconsolidated Joint Venture Backlog BACKLOG ROLL‐FORWARD (1) $ in millions COMMENCEMENT TIMING (2) $ in millions $147M $114M $269M $14M $18M $8M $34M 2021 2022 2023+ 2Q21 Backlog $2M DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021 $283M $89M $102M $269M $24M $11M $2M $34M 1Q21 Backlog Signed Commenced 2Q21 Backlog

Cycling Through Peak Vintage Renewals Narrowing the Gap on Cash Re‐Leasing Spreads | 10 0‐1 MW > 1 MW OTHER (1) TOTAL Signed renewal leases representing $131 million of annualized GAAP rental revenue Signed renewal leases representing $40 million of annualized GAAP rental revenue Signed renewal leases representing $7 million of annualized GAAP rental revenue Signed renewal leases representing $178 million of annualized GAAP rental revenue RENTAL RATE CHANGE 0.8% CASH 1.9% GAAP RENTAL RATE CHANGE ‐0.9% CASH 2.1% GAAP RENTAL RATE CHANGE ‐5.7% CASH 6.2% GAAP RENTAL RATE CHANGE 0.1% CASH 2.1% GAAP 2Q21 RE‐LEASING SPREADS Note: Totals may not add up due to rounding. Rental rate change represents the beginning rental rate on leases renewed, relative to the ending rental rate at expiration, weighted by net rentable square feet. 1) Other includes Powered Base Building® shell capacity as well as storage and office space within fully improved data center facilities. DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021

Effective Economic Risk Mitigation Strategies Benefits of Scale and Diversification on Display Source: FactSet. Note: Totals may not add up due to rounding. 1) As of June 30, 2021. Includes Digital Realty’s share of revenue from unconsolidated joint ventures. 2) Core FFO is a non‐GAAP financial measure. For a definition of core FFO and a reconciliation to its nearest GAAP equivalent, see the Appendix. 3) Based on average exchange rates for the quarter ended June 30, 2021 compared to average exchange rates for the quarter ended June 30, 2020. 11.2% DECREASE 8.6% DECREASE U.S. DOLLAR INDEX 2Q20 2Q21 EXPOSURE BY REVENUE (1) USD CAD GBP EURO JPY HKD SGD AUD CORE FFO/SHARE EXPOSURE (2) EXCHANGE RATES (3) U.S. DOLLAR / BRITISH POUND U.S. DOLLAR / EURO | 11 BRL SEK DKK CHF KES 2021 $6.48 / Sh 0.7% BENCHMARK RATES +/‐ 100 bps 0.1% GBP +/‐ 10% 61% < 1% 7% 20% < 1% 3% 2% 1% 2% < 1% < 1% 1% < 1% DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021 85 90 95 100 105 Apr‐20 Jul‐20 Oct‐20 Jan‐21 Apr‐21 Jul‐21 2.0% EUR +/‐ 10%

Four‐Quarter Two‐Step Building Momentum Note: Based on management estimates; actual performance may differ materially. Core FFO and NOI are non‐GAAP financial measures. For descriptions and reconciliations to the closest GAAP equivalents, see the Appendix. 2021E CORE FFO PER SHARE | 12 1Q21 2Q21 Deferred Tax NOI Growth Normalized 3Q21 4Q21 OpEx DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021 Impact

DEBT MATURITY SCHEDULE AS OF JUNE 30, 2021 (1)(2) (U.S. $ in billions) Matching the Duration of Assets and Liabilities Clear Runway on the Left, No Bar Too Tall on the Right 98% Unsecured Unsecured Secured Fixed Floating USD Euro GBP Other 90% Fixed 73% Non‐USD 6.4 YEARS Weighted Avg. Maturity (1)(2) 2.2% Weighted Avg. Coupon (1) DEBT PROFILE | 13 Note: As of June 30, 2021. 1) Includes Digital Realty’s pro rata share of five unconsolidated joint venture loans and debt securities. Pro forma for the issuance of ₣275mm notes due 2026 and ₣270mm notes due 2029 in July 2021. Assumes proceeds from transactions are used to repay borrowings under the global unsecured revolving credit facility. 2) Assumes exercise of extension options. DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021 $0.0 $0.7 $0.3 $1.5 $1.8 $2.0 $1.2 $1.4 $1.7 $1.7 $1.8 $0.9 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 Pro Rata Share of JV Debt Secured Mortgage Debt Unsecured Senior Notes Other Unsecured Debt Unsecured Green Bonds Unsecured Credit Facilities Pro Forma Payoffs Pro Forma Notes £ £ £ € € £ ₣ ₣ € € € ¥ € € € € ¥/CLP

Consistent Execution on Strategic Vision Delivering Current Results, Seeding Future Growth | 14 SUCCESSFUL 2Q21 INITIATIVES 1. Enhancing Product Mix Reached high‐water mark for 0‐1 MW + interconnection bookings 2. Delivering Sustainable Growth for Stakeholders Published third annual ESG Report 3. Accelerating Growth in Cash Flow Raised full‐year revenue and EBITDA guidance 4. Strengthening the Balance Sheet Redeemed high‐coupon preferred, locked in long‐term, fixed rate financing DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021

Appendix | 15 DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021

Digital Transformation Driving Steady Demand Global Full‐Product Spectrum Provides Broadest Solutions HISTORICAL BOOKINGS TRAILING FOUR‐QUARTER AVERAGE ANNUALIZED GAAP BASE RENT $ in millions 2Q21 TRAILING FOUR‐QUARTER AVERAGE BOOKINGS 0‐1 MW $34.8 mm > 1 MW $62.7 mm OTHER (1) $2.0 mm INTERCONNECTION $13.0 mm TOTAL BOOKINGS $112.4 mm 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 | 16 Note: Darker shading represents interconnection bookings. Second‐quarter bookings are highlighted in lighter blue. Totals may not add up due to rounding. 1) Other includes Powered Base Building® shell capacity as well as storage and office space within fully improved data center facilities. DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021 $0 $50 $100 $150

Appendix Management Statements on Non‐GAAP Measures | 17 The information included in this presentation contains certain non‐GAAP financial measures that management believes are helpful in understanding our business, as further described below. Our definition and calculation of non‐GAAP financial measures may differ from those of other REITs, and, therefore, may not be comparable. The non‐GAAP financial measures should not be considered alternatives to net income or any other GAAP measurement of performance and should not be considered an alternative to cash flows from operating, investing or financing activities as a measure of liquidity. Funds From Operations (FFO): We calculate funds from operations, or FFO, in accordance with the standards established by the National Association of Real Estate Investment Trusts, or NAREIT, in the NAREIT Funds From Operations White Paper ‐ 2018 Restatement. FFO represents net income (loss) (computed in accordance with GAAP), excluding gains (or losses) from real estate transactions, impairment of investment in real estate, real estate related depreciation and amortization (excluding amortization of deferred financing costs), unconsolidated JV real estate related depreciation & amortization, non‐controlling interests in operating partnership and after adjustments for unconsolidated partnerships and joint ventures. Management uses FFO as a supplemental performance measure because, in excluding real estate related depreciation and amortization and gains and losses from property dispositions and after adjustments for unconsolidated partnerships and joint ventures, it provides a performance measure that, when compared year over year, captures trends in occupancy rates, rental rates and operating costs. We also believe that, as a widely recognized measure of the performance of REITs, FFO will be used by investors as a basis to compare our operating performance with that of other REITs. However, because FFO excludes depreciation and amortization and captures neither the changes in the value of our data centers that result from use or market conditions, nor the level of capital expenditures and capitalized leasing commissions necessary to maintain the operating performance of our data centers, all of which have real economic effect and could materially impact our financial condition and results from operations, the utility of FFO as a measure of our performance is limited. Other REITs may not calculate FFO in accordance with the NAREIT definition and, accordingly, our FFO may not be comparable to other REITs’ FFO. FFO should be considered only as a supplement to net income computed in accordance with GAAP as a measure of our performance. Core Funds from Operations (Core FFO): We present core funds from operations, or core FFO, as a supplemental operating measure because, in excluding certain items that do not reflect core revenue or expense streams, it provides a performance measure that, when compared year over year, captures trends in our core business operating performance. We calculate core FFO by adding to or subtracting from FFO (i) termination fees and other non‐core revenues, (ii) transaction and integration expenses, (iii) loss from early extinguishment of debt, (iv) gain on / issuance costs associated with redeemed preferred stock, (v) severance, equity acceleration, and legal expenses, (vi) gain/loss on FX revaluation, and (vii) other non‐core expense adjustments. Because certain of these adjustments have a real economic impact on our financial condition and results from operations, the utility of core FFO as a measure of our performance is limited. Other REITs may calculate core FFO differently than we do and accordingly, our core FFO may not be comparable to other REITs’ core FFO. Core FFO should be considered only as a supplement to net income computed in accordance with GAAP as a measure of our performance. EBITDA and Adjusted EBITDA: We believe that earnings before interest, loss from early extinguishment of debt, income taxes, and depreciation and amortization, or EBITDA, and Adjusted EBITDA (as defined below), are useful supplemental performance measures because they allow investors to view our performance without the impact of non‐cash depreciation and amortization or the cost of debt and, with respect to Adjusted EBITDA, unconsolidated joint venture real estate related depreciation & amortization, unconsolidated joint venture interest expense and tax, severance, equity acceleration, and legal expenses, transaction and integration expenses, gain on sale / deconsolidation, impairment of investments in real estate, other non‐core adjustments, net, non‐controlling interests, preferred stock dividends, including undeclared dividends, and issuance costs associated with redeemed preferred stock. Adjusted EBITDA is EBITDA excluding unconsolidated joint venture real estate related depreciation & amortization, unconsolidated joint venture interest expense and tax, severance, equity acceleration, and legal expenses, transaction and integration expenses, gain on sale / deconsolidation, impairment of investments in real estate, other non‐core adjustments, net, non‐controlling interests, preferred stock dividends, including undeclared dividends, and gain on / issuance costs associated with redeemed preferred stock. In addition, we believe EBITDA and Adjusted EBITDA are frequently used by securities analysts, investors and other interested parties in the evaluation of REITs. Because EBITDA and Adjusted EBITDA are calculated before recurring cash charges including interest expense and income taxes, exclude capitalized costs, such as leasing commissions, and are not adjusted for capital expenditures or other recurring cash requirements of our business, their utility as a measure of our performance is limited. Other REITs may calculate EBITDA and Adjusted EBITDA differently than we do and, accordingly, our EBITDA and Adjusted EBITDA may not be comparable to other REITs’ EBITDA and Adjusted EBITDA. Accordingly, EBITDA and Adjusted EBITDA should be considered only as supplements to net income computed in accordance with GAAP as a measure of our financial performance. Net Operating Income (NOI) and Cash NOI: Net operating income, or NOI, represents rental revenue, tenant reimbursement revenue and interconnection revenue less utilities expense, rental property operating expenses, property taxes and insurance expenses (as reflected in the statement of operations). NOI is commonly used by stockholders, company management and industry analysts as a measurement of operating performance of the company’s rental portfolio. Cash NOI is NOI less straight‐line rents and above‐ and below‐market rent amortization. Cash NOI is commonly used by stockholders, company management and industry analysts as a measure of property operating performance on a cash basis. However, because NOI and cash NOI exclude depreciation and amortization and capture neither the changes in the value of our data centers that result from use or market conditions, nor the level of capital expenditures and capitalized leasing commissions necessary to maintain the operating performance of our data centers, all of which have real economic effect and could materially impact our results from operations, the utility of NOI and cash NOI as measures of our performance is limited. Other REITs may calculate NOI and cash NOI differently than we do and, accordingly, our NOI and cash NOI may not be comparable to other REITs’ NOI and cash NOI. NOI and cash NOI should be considered only as supplements to net income computed in accordance with GAAP as measures of our performance. DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021

Appendix Forward‐Looking Statements | 18 This information in this presentation contains forward‐looking statements within the meaning of the federal securities laws, which are based on current expectations, forecasts and assumptions that involve risks and uncertainties that could cause actual outcomes and results to differ materially. Such forward‐looking statements include statements relating to: our economic outlook; the expected benefits of Interxion and other transactions; our expected investment and expansion activity; our joint ventures; the expected benefits and timing of PlatformDIGITAL®; the Data Gravity Index™; Data Gravity Index DGx™; public cloud services spending; our corporate governance; our sustainability initiatives; the expected effect of foreign currency translation adjustments on our financials; the COVID‐19 pandemic; demand drivers and economic growth outlook; business drivers; sources and uses; our expected development plans and completions, including timing, total square footage, IT capacity and raised floor space upon completion; expected availability for leasing efforts and colocation initiatives; organizational initiatives; our product offerings; our communities of interest; our expected Go to Market strategy; joint venture opportunities; occupancy and total investment; our expected investment in our properties; our estimated time to stabilization and targeted returns at stabilization of our properties; our expected future acquisitions; acquisitions strategy; available inventory and development strategy; the signing and commencement of leases, and related rental revenue; lag between signing and commencement of leases; our 2021 backlog; future rents; our expected same store portfolio growth; our expected growth and stabilization of development completions and acquisitions; our expected mark to market rates on lease expirations, lease rollovers and expected rental rate changes; our re‐leasing spreads; our leasing expirations; our expected yields on investments; our expectations with respect to capital investments at lease expiration on existing data center or colocation space; barriers to entry; competition; debt maturities; lease maturities; our expected returns on invested capital; estimated absorption rates; our other expected future financial and other results, and the assumptions underlying such results; our top investment geographies and market opportunities; our expected colocation expansions; our ability to access the capital markets; expected time and cost savings to our customers; our customers’ capital investments; our plans and intentions; future data center utilization, utilization rates, growth rates, trends, supply and demand; datacenter outsourcing trends; datacenter expansion plans; estimated kW/MW requirements; growth in the overall Internet infrastructure sector and segments thereof; the replacement cost of our assets; the development costs of our buildings, and lead times; estimated costs for customers to deploy or migrate to a new data center; capital expenditures; the effect new leases and increases in rental rates will have on our rental revenues and results of operations; lease expiration rates; our ability to borrow funds under our credit facilities; estimates of the value of our development portfolio; our ability to meet our liquidity needs, including the ability to raise additional capital; credit ratings; capitalization rates, or cap rates; market forecasts; potential new locations; the expected impact of our global expansion; dividend payments and our dividend policy; projected financial information and covenant metrics; core FFO run rate and NOI growth; other forward looking financial data; leasing expectations; our exposure to tenants in certain industries; our expectations and underlying assumptions regarding our sensitivity to fluctuations in foreign exchange rates and energy prices ; and the sufficiency of our capital to fund future requirements. You can identify forward‐looking statements by the use of forward‐looking terminology such as “believes,” “expects,” “may,” “will,” “should,” “seeks,” “approximately,” “intends,” “plans,” “pro forma,” “estimates” or “anticipates” or the negative of these words and phrases or similar words or phrases which are predictions of or indicate future events or trends and discussions which do not relate solely to historical matters. Such statements are based on management’s beliefs and assumptions made based on information currently available to management. Such statements are subject to risks, uncertainties and assumptions and are not guarantees of future performance and may be affected by known and unknown risks, trends, uncertainties and factors that are beyond our control. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those anticipated, estimated or projected. Some of the risks and uncertainties that may cause our actual results, performance or achievements to differ materially from those expressed or implied by forward‐looking statements include, among others, the following: reduced demand for data centers or decreases in information technology spending; the competitive environment in which we operate; decreased rental rates, increased operating costs or increased vacancy rates; the impact of the COVID‐19 pandemic on our or our customers’, suppliers’ or business partners’ operations; increased competition or available supply of data center space; the suitability of our data centers and data center infrastructure, delays or disruptions in connectivity or availability of power, or failures or breaches of our physical and information security infrastructure or services; our dependence upon significant customers, bankruptcy or insolvency of a major customer or a significant number of smaller customers, or defaults on or non‐renewal of leases by customers; breaches of our obligations or restrictions under our contracts with our customers; our inability to successfully develop and lease new properties and development space, and delays or unexpected costs in development of properties; the impact of current global and local economic, credit and market conditions; our inability to retain data center space that we lease or sublease from third parties; difficulty managing an international business and acquiring or operating properties in foreign jurisdictions and unfamiliar metropolitan areas; our inability to achieve expected revenue synergies or cost savings as a result of our combination with Interxion; our failure to realize the intended benefits from, or disruptions to our plans and operations or unknown or contingent liabilities related to, our recent acquisitions; our failure to successfully integrate and operate acquired or developed properties or businesses; difficulties in identifying properties to acquire and completing acquisitions; risks related to joint venture investments, including as a result of our lack of control of such investments; risks associated with using debt to fund our business activities, including re‐ financing and interest rate risks, our failure to repay debt when due, adverse changes in our credit ratings or our breach of covenants or other terms contained in our loan facilities and agreements; our failure to obtain necessary debt and equity financing, and our dependence on external sources of capital; financial market fluctuations and changes in foreign currency exchange rates; adverse economic or real estate developments in our industry or the industry sectors that we sell to, including risks relating to decreasing real estate valuations and impairment charges and goodwill and other intangible asset impairment charges; our inability to manage our growth effectively; losses in excess of our insurance coverage; environmental liabilities and risks related to natural disasters; our inability to comply with rules and regulations applicable to our company; Digital Realty Trust, Inc.’s failure to maintain its status as a REIT for federal income tax purposes; Digital Realty Trust, L.P.’s failure to qualify as a partnership for federal income tax purposes; restrictions on our ability to engage in certain business activities; and changes in local, state, federal and international laws and regulations, including related to taxation, real estate and zoning laws, and increases in real property tax rates; our ability to attract and retain qualified personnel and to attract and retain customers; and the impact of any financial, accounting, legal or regulatory issues or litigation that may affect us. The risks included here are not exhaustive, and additional factors could adversely affect our business and financial performance. We discussed a number of additional material risks in our annual report on Form 10‐K for the year ended December 31, 2020, and other filings with the Securities and Exchange Commission. Those risks continue to be relevant to our performance and financial condition. Moreover, we operate in a very competitive and rapidly changing environment. New risk factors emerge from time to time and it is not possible for management to predict all such risk factors, nor can it assess the impact of all such risk factors on the business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward‐looking statements. We expressly disclaim any responsibility to update forward‐looking statements, whether as a result of new information, future events or otherwise. Digital Realty, Digital Realty Trust, the Digital Realty logo, Interxion, Turn‐Key Flex, Powered Base Building, PlatformDIGITAL, Data Gravity Index, Data Gravity Index DGx and Connected Data Communities are registered trademarks and service marks of Digital Realty Trust, Inc. in the United States and/or other countries. All other names, trademarks and service marks are the property of their respective owners. DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021

Reconciliation of Non‐GAAP Items To Their Closest GAAP Equivalent | 19 DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021 June 30, 2021 June 30, 2020 June 30, 2021 June 30, 2020 Net income available to common stockholders 127,368 $ 53,676 $ 499,778 $ 256,535 $ Adjustments: Noncontrolling interests in operating partnership 3,200 1,400 13,000 9,200 Real estate related depreciation and amortization (1) 363,640 342,334 728,337 628,851 Real estate related depreciation and amortization related to investment in unconsolidated joint ventures 20,983 17,123 40,361 37,046 (Gain) on real estate transactions (499) ‐ (334,420) (304,801) FFO available to common stockholders and unitholders 514,692 $ 414,533 $ 947,056 $ 626,831 $ Basic FFO per share and unit 1.78 $ 1.50 $ 3.28 $ 2.48 $ Diluted FFO per share and unit 1.78 $ 1.49 $ 3.27 $ 2.45 $ Weighted average common stock and units outstanding Basic 288,843 275,545 288,588 252,995 Diluted 289,485 278,719 289,219 255,704 (1) Real estate related depreciation and amortization was computed as follows: Depreciation and amortization per income statement 368,981 349,165 738,714 640,622 Non‐real estate depreciation (5,341) (6,831) (10,377) (11,771) 363,640 $ 342,334 $ 728,337 $ 628,851 $ June 30, 2021 June 30, 2020 June 30, 2021 June 30, 2020 FFO available to common stockholders and unitholders ‐‐ basic and diluted 514,692 $ 414,533 $ 947,056 $ 626,831 $ Weighted average common stock and units outstanding 288,843 275,545 288,588 252,995 Add: Effect of dilutive securities 642 3,174 631 2,709 Weighted average common stock and units outstanding ‐‐ diluted 289,485 278,719 289,219 255,704 Three Months Ended Six Months Ended Six Months Ended Digital Realty Trust, Inc. and Subsidiaries Reconciliation of Net Income Available to Common Stockholders to Funds From Operations (FFO) (in thousands, except per share and unit data) (unaudited) Three Months Ended

Reconciliation of Non‐GAAP Items To Their Closest GAAP Equivalent | 20 DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021 June 30, 2021 June 30, 2020 June 30, 2021 June 30, 2020 FFO available to common stockholders and unitholders ‐‐ diluted 514,692 $ 414,533 $ 947,056 $ 626,831 $ Termination fees and other non‐core revenues (11,122) (21,908) (11,181) (24,333) Transaction and integration expenses 7,075 15,618 21,195 72,419 Loss from early extinguishment of debt ‐ ‐ 18,347 632 (Gain) / Loss on FX revaluation (51,649) 17,526 (17,577) 98,814 (Gain) on redemption of preferred stock (18,000) ‐ (18,000) ‐ Severance accrual and equity acceleration 2,536 3,642 4,963 4,914 Other non‐core expense adjustments 2,298 22 (16,942) 5,531 CFFO available to common stockholders and unitholders ‐‐ diluted 445,830 $ 429,433 $ 927,861 $ 784,808 $ Diluted CFFO per share and unit 1.54 $ 1.54 $ 3.21 $ 3.07 $ Digital Realty Trust, Inc. and Subsidiaries Reconciliation of Funds From Operations (FFO) to Core Funds From Operations (CFFO) (in thousands, except per share and unit data) (unaudited) Three Months Ended Six Months Ended

Reconciliation of Non‐GAAP Items To Their Closest GAAP Equivalent | 21 DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021 June 30, 2021 June 30, 2020 June 30, 2021 June 30, 2020 Net income available to common stockholders 127,368 $ 53,676 $ 499,778 $ 256,535 $ Interest 75,014 79,874 150,667 165,674 Loss from early extinguishment of debt ‐ ‐ 18,347 632 Income tax expense (benefit) 47,582 11,490 55,129 18,672 Depreciation and amortization 368,981 349,165 738,714 640,622 EBITDA 618,945 494,205 1,462,635 1,082,135 Unconsolidated JV real estate related depreciation & amortization 20,983 17,123 40,361 37,046 Unconsolidated JV interest expense and tax expense 15,523 9,203 45,454 32,487 Severance accrual and equity acceleration 2,536 3,642 4,963 4,914 Transaction and integration expenses 7,075 15,618 21,195 72,419 (Gain) on sale / deconsolidation (499) ‐ (346,514) (67,497) Other non‐core adjustments, net (60,308) (3,404) (40,631) (24,250) Noncontrolling interests 4,544 1,147 13,300 5,831 Preferred stock dividends, including undeclared dividends 11,885 21,155 25,399 42,310 (Gain) on redemption of preferred stock (18,000) ‐ (1,480) 11,760 . Adjusted EBITDA 602,684 $ 558,689 $ 1,231,164 $ 1,202,506 $ Digital Realty Trust, Inc. and Subsidiaries Reconciliation of Net Income Available to Common Stockholders to Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA) and Adjusted EBITDA (in thousands) (unaudited) Six Months Ended Three Months Ended

Reconciliation of Non‐GAAP Items To Their Closest GAAP Equivalent | 22 DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021 June 30, 2021 June 30, 2020 June 30, 2021 June 30, 2020 Rental revenues 420,244 $ 417,728 $ 834,406 $ 832,191 $ Tenant reimbursements ‐ Utilities 84,225 79,980 180,456 162,382 Tenant reimbursements ‐ Other 47,730 48,340 91,514 91,886 Interconnection and other 57,504 56,059 114,768 110,900 Total Revenue 609,703 602,107 1,221,144 1,197,359 Utilities 99,788 93,520 211,419 186,143 Rental property operating 101,658 92,846 201,847 184,985 Property taxes 29,395 30,823 60,348 60,352 Insurance 2,713 2,517 5,414 5,436 Total Expenses 233,554 219,706 479,028 436,916 Net Operating Income 376,149 $ 382,401 $ 742,116 $ 760,443 $ Less: Stabilized straight‐line rent (3,329) $ (965) $ (5,526) $ 495 $ Above and below market rent (211) (2,250) (782) (4,656) Cash Net Operating Income 379,689 $ 385,616 $ 748,424 $ 764,604 $ Three Months Ended Six Months Ended Digital Realty Trust, Inc. and Subsidiaries Reconciliation of Same Capital Cash Net Operating Income (in thousands) (unaudited)

Reconciliation of Non‐GAAP Items To Their Closest GAAP Equivalent | 23 Note: For quarter ended June 30, 2021. DIGITAL REALTY | 2Q21 FINANCIAL RESULTS | JULY 29, 2021 Total Debt/Total Enterprise Value QE 6/30/21 Market value of common equity(i) 43,582,029 $ Liquidation value of preferred equity(ii) 755,000 Total GAAP interest expense (including unconsolidated JV interest expense) 95,997 Total debt at balance sheet carrying value 13,927,821 Add: Capitalized interest 11,558 Total Enterprise Value 58,264,850 $ GAAP interest expense plus capitalized interest 107,555 Total debt / total enterprise value 23.9% Debt‐plus‐preferred‐to‐total‐enterprise‐value 25.2% Debt Service Ratio 5.6x (i) Market Value of Common Equity Common shares outstanding 282,603 Common units outstanding 7,055 QE 6/30/21 Total Shares and Partnership Units 289,659 Fixed Charged Ratio (LQA Adjusted EBITDA/total fixed charges) Stock price as of June 30, 2021 150.46 $ Market value of common equity 43,582,029 $ GAAP interest expense plus capitalized interest 107,555 Preferred dividends 11,885 (ii) Liquidation value of preferred equity ($25.00 per share) Total fixed charges 119,440 Shares O/S Liquidation Value Series J Preferred 8,000 200,000 Fixed charge ratio 5.0x Series K Preferred 8,400 210,000 Series L Preferred 13,800 345,000 755,000 (iv) QE 6/30/21 Unsecured Debt/Total Debt Net Debt/LQA Adjusted EBITDA QE 6/30/21 Global unsecured revolving credit facility 1,026,368 Total debt at balance sheet carrying value 13,927,821 $ Unsecured senior notes, net of discount 12,659,043 Add: DLR share of unconsolidated joint venture debt 723,202 Secured debt, including premiums 242,410 Add: Capital lease obligations, net 228,549 Capital lease obligations, net 228,549 Less: Unrestricted cash (300,093) Total debt at balance sheet carrying value 14,156,370 Net Debt as of June 30, 2021 14,579,479 $ Unsecured Debt / Total Debt 98.3% Net Debt / LQA Adjusted EBITDA(iii) 6.0x (iii) Adjusted EBITDA Net Debt Plus Preferred/LQA Adjusted EBITDA QE 6/30/21 Net loss available to common stockholders 127,368 $ Total debt at balance sheet carrying value 13,927,821 Interest expense 75,014 Less: Unrestricted cash (300,093) Taxes 47,582 Capital lease obligations, net 228,549 Depreciation and amortization 368,981 DLR share of unconsolidated joint venture debt 723,202 EBITDA 618,945 Net Debt as of June 30, 2021 14,579,479 Preferred Liquidation Value (iv) 755,000 Unconsolidated JV real estate related depreciation & amortization 20,983 Net Debt plus preferred 15,334,479 Unconsolidated JV interest expense and tax expense 15,523 Severance accrual and equity acceleration and legal expenses 2,536 Net Debt Plus Preferred/LQA Adjusted EBITDA(iii) 6.4x Transaction and integration expenses 7,075 Gain on sale / deconsolidation (499) Other non‐core adjustments, net (60,308) Noncontrolling interests 4,544 Preferred stock dividends, including undeclared dividends 11,885 (Gain) on redemption of preferred stock (18,000) LQA Adjusted EBITDA (Adjusted EBITDA x 4) 2,410,734 $ Debt Service Ratio (LQA Adjusted EBITDA/GAAP interest expense plus capitalized interest and less bridge facility fees)