<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2022-01-31</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001794905</issuerCik>
        <issuerName>Cyxtera Technologies, Inc.</issuerName>
        <issuerTradingSymbol>CYXT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001709681</rptOwnerCik>
            <rptOwnerName>BC Partners Holdings Ltd</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>WEST WING, FLOOR 2, TRAFALGAR COURT,</rptOwnerStreet1>
            <rptOwnerStreet2>LES BANQUES</rptOwnerStreet2>
            <rptOwnerCity>ST. PETER PORT</rptOwnerCity>
            <rptOwnerState>Y7</rptOwnerState>
            <rptOwnerZipCode>GY1 4LY</rptOwnerZipCode>
            <rptOwnerStateDescription>GUERNSEY</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001792292</rptOwnerCik>
            <rptOwnerName>BC Partners Group Holdings Ltd</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>WEST WING, FLOOR 2, TRAFALGAR COURT,</rptOwnerStreet1>
            <rptOwnerStreet2>LES BANQUES</rptOwnerStreet2>
            <rptOwnerCity>ST. PETER PORT</rptOwnerCity>
            <rptOwnerState>Y7</rptOwnerState>
            <rptOwnerZipCode>GY1 4LY</rptOwnerZipCode>
            <rptOwnerStateDescription>GUERNSEY</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001876892</rptOwnerCik>
            <rptOwnerName>BCEC - Cyxtera Technologies Holdings (Guernsey) L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ARNOLD HOUSE PO BOX 273</rptOwnerStreet1>
            <rptOwnerStreet2>ST JULIAN'S AVENUE</rptOwnerStreet2>
            <rptOwnerCity>ST PETER PORT</rptOwnerCity>
            <rptOwnerState>Y7</rptOwnerState>
            <rptOwnerZipCode>GY1 3RD</rptOwnerZipCode>
            <rptOwnerStateDescription>GUERNSEY</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001875653</rptOwnerCik>
            <rptOwnerName>BCEC Management X Ltd</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ARNOLD HOUSE PO BOX 273</rptOwnerStreet1>
            <rptOwnerStreet2>ST JULIAN'S AVENUE</rptOwnerStreet2>
            <rptOwnerCity>ST PETER PORT</rptOwnerCity>
            <rptOwnerState>Y7</rptOwnerState>
            <rptOwnerZipCode>GY1 3RD</rptOwnerZipCode>
            <rptOwnerStateDescription>GUERNSEY</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001518072</rptOwnerCik>
            <rptOwnerName>CIE Management IX Ltd</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ARNOLD HOUSE PO BOX 273</rptOwnerStreet1>
            <rptOwnerStreet2>ST JULIAN'S AVENUE</rptOwnerStreet2>
            <rptOwnerCity>ST PETER PORT</rptOwnerCity>
            <rptOwnerState>Y7</rptOwnerState>
            <rptOwnerZipCode>GY1 3RD</rptOwnerZipCode>
            <rptOwnerStateDescription>GUERNSEY</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001875666</rptOwnerCik>
            <rptOwnerName>SIS Holdings LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2333 PONCE DE LEON BOULEVARD,</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 900</rptOwnerStreet2>
            <rptOwnerCity>CORAL GABLES</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33134</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001875713</rptOwnerCik>
            <rptOwnerName>SIS Holdings GP LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2333 PONCE DE LEON BOULEVARD,</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 900</rptOwnerStreet2>
            <rptOwnerCity>CORAL GABLES</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33134</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001877345</rptOwnerCik>
            <rptOwnerName>Medina Capital Fund II - SIS Holdco, LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2333 PONCE DE LEON BOULEVARD,</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 900</rptOwnerStreet2>
            <rptOwnerCity>CORAL GABLES</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33134</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001878151</rptOwnerCik>
            <rptOwnerName>Medina Capital Fund II - SIS Holdco GP, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2333 PONCE DE LEON BOULEVARD,</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 900</rptOwnerStreet2>
            <rptOwnerCity>CORAL GABLES</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33134</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2022-01-31</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3750000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>10.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>109850000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By SIS Holdings LP</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Optional Shares</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>10.00</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2022-01-31</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3750000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3750000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By SIS Holdings LP</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The option to purchase shares of Class A common stock at a price per share of $10.00 is exercisable by SIS Holdings LP at any time or from time to time during the six months following the day that is the first business day after the consummation of the business combination between Starboard Value Acquisition Corp. and Cyxtera Technologies, Inc., which was consummated on July 29, 2021.</footnote>
        <footnote id="F2">The general partner of SIS Holdings LP is SIS Holdings GP, LLC (&quot;SIS GP&quot;). SIS GP is managed by a board of directors, a majority of which is appointed by BCEC Cyxtera Technologies Holdings (Guernsey) L.P. (the &quot;BC Stockholder&quot;). The general partners of the BC Stockholder are CIE Management IX Limited and BCEC Management X Limited, which are controlled by the board of directors, which are appointed by BC Partners Group Holdings Limited, which is a majority owned subsidiary of BC Partners Holdings Limited, which is controlled by Lee Clark, Karen Jamieson and Mark Rodliffe. As a result, each of the foregoing entities may be deemed to share voting and investment power over the shares held directly by SIS Holdings LP, but disclaim beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein.</footnote>
        <footnote id="F3">Pursuant to a Stockholder Matters Agreement, dated as of July 30, 2021, Medina Capital Fund II- SIS Holdco, L.P. (the &quot;Medina Stockholder&quot;) maintains a negative consent right over the disposition of the securities held by SIS Holdings LP. Medina Capital Fund II - SIS Holdco GP, LLC (&quot;Medina GP&quot;) is the general partner of the Medina Stockholder. Manuel D. Medina ultimately controls Medina GP. As such, each of the Medina Stockholder, Medina GP and Mr. Medina may be deemed to share beneficial ownership over the securities held directly by SIS Holdings LP. Each of Mr. Medina and the foregoing entities disclaim beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>BC Partners Holdings Limited, By: /s/ Lee Clark, Name: Lee Clark, Title: Director</signatureName>
        <signatureDate>2022-02-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>BC Partners Group Holdings Limited, By: /s/ Lee Clark, Name: Lee Clark, Title: Director</signatureName>
        <signatureDate>2022-02-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>BCEC-Cyxtera Technologies Holdings (Guernsey) L.P., By: /s/ Lee Clark, Name: Lee Clark, Title: Director of the General Partners</signatureName>
        <signatureDate>2022-02-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>BCEC Management X Limited, By: /s/ Lee Clark, Name: Lee Clark, Title: Director</signatureName>
        <signatureDate>2022-02-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>CIE Management IX Limited, By: /s/ Lee Clark, Name: Lee Clark, Title: Director</signatureName>
        <signatureDate>2022-02-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>SIS Holdings LP, By: SIS Holdings GP, LLC, its General Partner, By: /s/ Manuel D. Medina, Name: Manuel D. Medina, Title: Chief Executive Officer</signatureName>
        <signatureDate>2022-02-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>SIS Holdings GP LLC, By: /s/ Manuel D. Medina, Name: Manuel D. Medina, Title: Chief Executive Officer</signatureName>
        <signatureDate>2022-02-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Medina Capital Fund II - SIS Holdco, LP, By: /s/ Manuel D. Medina, Name: Manuel D. Medina, Title: Authorized Signatory</signatureName>
        <signatureDate>2022-02-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Medina Capital Fund II - SIS Holdco GP, LLC, By: /s/ Manuel D. Medina, Name: Manuel D. Medina, Title: Authorized Signatory</signatureName>
        <signatureDate>2022-02-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
