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    <periodOfReport>2018-12-01</periodOfReport>

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    <issuer>
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        <issuerName>COGNIZANT TECHNOLOGY SOLUTIONS CORP</issuerName>
        <issuerTradingSymbol>CTSH</issuerTradingSymbol>
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            <rptOwnerName>SINHA DHARMENDRA KUMAR</rptOwnerName>
        </reportingOwnerId>
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            <rptOwnerStreet1>C/O COGNIZANT TECHNOLOGY SOLUTIONS CORP.</rptOwnerStreet1>
            <rptOwnerStreet2>500 FRANK W. BURR BLVD.</rptOwnerStreet2>
            <rptOwnerCity>TEANECK</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07666</rptOwnerZipCode>
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            <officerTitle>President Global Client Serv.</officerTitle>
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    <footnotes>
        <footnote id="F1">Shares of Class A Common Stock of Cognizant Technology Solutions Corporation (the &quot;Company&quot;) received from the vesting of 1/12th of the restricted stock unit award granted on February 16, 2016.</footnote>
        <footnote id="F2">Represents the portion of shares of Class A Common Stock that the Company determined to settle in cash to pay applicable tax withholding.</footnote>
        <footnote id="F3">Shares of the Company's Class A Common Stock received from the vesting of 1/12th of the restricted stock unit award granted on December 1, 2016.</footnote>
        <footnote id="F4">Shares of the Company's Class A Common Stock received from the vesting of 1/12th of the restricted stock unit award granted on February 26, 2018.</footnote>
        <footnote id="F5">Represents the number of shares of Class A Common Stock received from the vesting of 1/2 of the performance-based restricted stock unit award granted to the reporting person under the Cognizant Technology Solutions Corporation 2009 Incentive Compensation Plan on November 30, 2015.</footnote>
        <footnote id="F6">Each restricted stock unit represents a contingent right to receive one share of the Company's Class A Common Stock.</footnote>
        <footnote id="F7">The restricted stock units were granted on February 16, 2016 under the Cognizant Technology Solutions Corporation 2009 Incentive Compensation Plan and vest in quarterly installments over three years, commencing on June 1, 2016, with 1/12th of the stock units vesting on each quarterly vesting date so that the stock units will be fully vested on the twelfth quarterly vesting date. The stock units will be fully vested on March 1, 2019.</footnote>
        <footnote id="F8">The restricted stock units were granted on December 1, 2016 under the Cognizant Technology Solutions Corporation 2009 Incentive Compensation Plan and vest in quarterly installments over three years, commencing on March 1, 2017, with 1/12th of the stock units vesting on each quarterly vesting date so that the stock units will be fully vested on the twelfth quarterly vesting date. The stock units will be fully vested on December 1, 2019.</footnote>
        <footnote id="F9">The restricted stock units were granted on February 26, 2018 under the Cognizant Technology Solutions Corporation 2017 Incentive Award Plan and vest in quarterly installments over three years, commencing on June 1, 2018, with 1/12th of the stock units vesting on each quarterly vesting date so that the stock units will be fully vested on the twelfth quarterly vesting date. The stock units will be fully vested on March 1, 2021.</footnote>
        <footnote id="F10">The performance-based restricted stock units were granted on November 30, 2015 under the Cognizant Technology Solutions Corporation 2009 Incentive Compensation Plan. In accordance with the performance-based restricted stock unit award agreement, 1/2 of the vested performance-based restricted stock units were vested and issuable on June 1, 2017, provided the reporting person remained in the Company's service through such date.  The remaining 1/2 of the vested performance-based restricted stock units were vested and issuable on December 1, 2018, provided that the reporting person remained in the Company's service through such date.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Harry Demas, on behalf of Dharmendra Kumar Sinha, by Power of Attorney</signatureName>
        <signatureDate>2018-12-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
