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<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-08-05</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001773383</issuerCik>
        <issuerName>Dynatrace, Inc.</issuerName>
        <issuerTradingSymbol>DT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001813487</rptOwnerCik>
            <rptOwnerName>THOMA BRAVO UGP, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O THOMA BRAVO, L.P.</rptOwnerStreet1>
            <rptOwnerStreet2>150 NORTH RIVERSIDE PLAZA, SUITE 2800</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60606</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001783009</rptOwnerCik>
            <rptOwnerName>THOMA BRAVO PARTNERS X, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O THOMA BRAVO, L.P.</rptOwnerStreet1>
            <rptOwnerStreet2>150 NORTH RIVERSIDE PLAZA, SUITE 2800</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60606</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001722232</rptOwnerCik>
            <rptOwnerName>THOMA BRAVO PARTNERS XI, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O THOMA BRAVO, L.P.</rptOwnerStreet1>
            <rptOwnerStreet2>150 NORTH RIVERSIDE PLAZA, SUITE 2800</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60606</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001537211</rptOwnerCik>
            <rptOwnerName>THOMA BRAVO FUND X, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O THOMA BRAVO, L.P.</rptOwnerStreet1>
            <rptOwnerStreet2>150 NORTH RIVERSIDE PLAZA, SUITE 2800</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60606</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001537212</rptOwnerCik>
            <rptOwnerName>THOMA BRAVO FUND X-A, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O THOMA BRAVO, L.P.</rptOwnerStreet1>
            <rptOwnerStreet2>150 NORTH RIVERSIDE PLAZA, SUITE 2800</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60606</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001579904</rptOwnerCik>
            <rptOwnerName>THOMA BRAVO SPECIAL OPPORTUNITIES FUND I, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O THOMA BRAVO, L.P.</rptOwnerStreet1>
            <rptOwnerStreet2>150 NORTH RIVERSIDE PLAZA, SUITE 2800</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60606</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001783011</rptOwnerCik>
            <rptOwnerName>THOMA BRAVO SPECIAL OPPORTUNITIES FUND I AIV, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O THOMA BRAVO, L.P.</rptOwnerStreet1>
            <rptOwnerStreet2>150 NORTH RIVERSIDE PLAZA, SUITE 2800</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60606</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001606286</rptOwnerCik>
            <rptOwnerName>THOMA BRAVO FUND XI, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O THOMA BRAVO, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>150 NORTH RIVERSIDE PLAZA, SUITE 2800</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60606</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001606287</rptOwnerCik>
            <rptOwnerName>THOMA BRAVO FUND XI-A, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O THOMA BRAVO, L.P.</rptOwnerStreet1>
            <rptOwnerStreet2>150 NORTH RIVERSIDE PLAZA, SUITE 2800</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60606</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001606288</rptOwnerCik>
            <rptOwnerName>THOMA BRAVO EXECUTIVE FUND XI, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O THOMA BRAVO, L.P.</rptOwnerStreet1>
            <rptOwnerStreet2>150 NORTH RIVERSIDE PLAZA, SUITE 2800</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60606</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-08-05</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>21412966</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>40.90</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>95078270</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents the offering price to the public of $41.10 per share, less the underwriters' discount of $0.20 per share.</footnote>
        <footnote id="F2">Consists of 10,429,397 shares held directly by Thoma Bravo Fund X, L.P. (&quot;TB Fund X&quot;), 2,281,350 shares held directly by Thoma Bravo Fund X-A, L.P. (&quot;TB Fund X-A&quot;), 49,124,660 shares held directly by Thoma Bravo Fund XI, L.P. (&quot;TB Fund XI&quot;), 24,671,613 shares held directly by Thoma Bravo Fund XI-A, L.P. (&quot;TB Fund XI-A&quot;), 1,083,735 shares held directly by Thoma Bravo Executive Fund XI, L.P. (&quot;TB Exec Fund&quot;), 894,849 shares held directly by Thoma Bravo Special Opportunities Fund I, L.P. (&quot;TB SOF&quot;) and 6,592,666 shares held directly by Thoma Bravo Special Opportunities Fund I AIV, L.P. (&quot;TB SOF AIV&quot;).</footnote>
        <footnote id="F3">Thoma Bravo Partners X, L.P. (&quot;TB Partners X&quot;) is the general partner of each of TB Fund X, TB Fund X-A, TB SOF and TB SOF AIV. Thoma Bravo Partners XI, L.P. (&quot;TB Partners XI&quot;) is the general partner of each of TB Fund XI, TB Fund XI-A and TB Exec Fund. Thoma Bravo UGP, LLC is the ultimate managing member of TB Partners X and TB Partners XI.  By virtue of the relationships described in this footnote, Thoma Bravo UGP, LLC may be deemed to exercise voting and dispositive power with respect to the shares held by TB Fund X, TB Fund X-A, TB SOF, TB SOF AIV, TB Fund XI, TB Fund XI-A and TB Exec Fund. Each of TB Partners X, TB Partners XI and Thoma Bravo UGP, LLC disclaims beneficial ownership of the shares owned by TB Fund X, TB Fund X-A, TB SOF, TB SOF AIV, TB Fund XI, TB Fund XI-A and TB Exec Fund except to the extent of its pecuniary interest therein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Seth Boro, Managing Partner of Thoma Bravo UGP, LLC</signatureName>
        <signatureDate>2020-08-05</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Seth Boro, Managing Partner of Thoma Bravo Partners X, L.P.</signatureName>
        <signatureDate>2020-08-05</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Seth Boro, Managing Partner of Thoma Bravo Partners XI, L.P.</signatureName>
        <signatureDate>2020-08-05</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Seth Boro, Managing Partner of Thoma Bravo Partners X, L.P., the general partner of Thoma Bravo Fund X, L.P.</signatureName>
        <signatureDate>2020-08-05</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Seth Boro, Managing Partner of Thoma Bravo Partners X, L.P., the general partner of Thoma Bravo Fund X-A, L.P.</signatureName>
        <signatureDate>2020-08-05</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Seth Boro, Managing Partner of Thoma Bravo Partners X, L.P., the general partner of Thoma Bravo Special Opportunities Fund I, L.P.</signatureName>
        <signatureDate>2020-08-05</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Seth Boro, Managing Partner of Thoma Bravo Partners X, L.P., the general partner of Thoma Bravo Special Opportunities Fund I AIV, L.P.</signatureName>
        <signatureDate>2020-08-05</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Seth Boro, Managing Partner of Thoma Bravo Partners XI, L.P., the general partner of Thoma Bravo Fund XI, L.P.</signatureName>
        <signatureDate>2020-08-05</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Seth Boro, Managing Partner of Thoma Bravo Partners XI, L.P., the general partner of Thoma Bravo Fund XI-A, L.P.</signatureName>
        <signatureDate>2020-08-05</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Seth Boro, Managing Partner of Thoma Bravo Partners XI, L.P., the general partner of Thoma Bravo Executive Fund XI, L.P.</signatureName>
        <signatureDate>2020-08-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
