<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>144/A</submissionType>
    <previousAccessionNumber>0001950047-26-006280</previousAccessionNumber>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0002024441</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001517413</issuerCik>
      <issuerName>Fastly, Inc.</issuerName>
      <secFileNumber>001-38897</secFileNumber>
      <issuerAddress>
        <com:street1>475 BRANNAN</com:street1>
        <com:street2>SUITE 300</com:street2>
        <com:city>SAN FRANCISCO</com:city>
        <com:stateOrCountry>CA</com:stateOrCountry>
        <com:zipCode>94107</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>844-432-7859</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Lovett Scott R.</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
        <address>
          <com:street1>1 New York Plaza</com:street1>
          <com:street2>8th Floor</com:street2>
          <com:city>New York</com:city>
          <com:stateOrCountry>NY</com:stateOrCountry>
          <com:zipCode>10004</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>41716</noOfUnitsSold>
      <aggregateMarketValue>725024.08</aggregateMarketValue>
      <noOfUnitsOutstanding>156500000</noOfUnitsOutstanding>
      <approxSaleDate>06/17/2026</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>06/17/2026</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Units</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>41716</amountOfSecuritiesAcquired>
      <paymentDate>06/17/2026</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>SCOTT LOVETT</name>
        <address>
          <com:street1>475 Brannan Street, Suite 300</com:street1>
          <com:city>San Francisco</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94107</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>06/15/2026</saleDate>
      <amountOfSecuritiesSold>34919</amountOfSecuritiesSold>
      <grossProceeds>633940.48</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>SCOTT LOVETT</name>
        <address>
          <com:street1>475 Brannan Street, Suite 300</com:street1>
          <com:city>San Francisco</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94107</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>05/29/2026</saleDate>
      <amountOfSecuritiesSold>19622</amountOfSecuritiesSold>
      <grossProceeds>332789.12</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>SCOTT LOVETT</name>
        <address>
          <com:street1>475 Brannan Street, Suite 300,</com:street1>
          <com:city>San Francisco</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94107</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>05/18/2026</saleDate>
      <amountOfSecuritiesSold>14843</amountOfSecuritiesSold>
      <grossProceeds>250104.55</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>SCOTT LOVETT</name>
        <address>
          <com:street1>475 Brannan Street, Suite 300,</com:street1>
          <com:city>San Francisco</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94107</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>03/18/2026</saleDate>
      <amountOfSecuritiesSold>41682</amountOfSecuritiesSold>
      <grossProceeds>1102413.87</grossProceeds>
    </securitiesSoldInPast3Months>
    <remarks>The 144 form filed on 6/17/2026 is amended to update the share amount to 41,716.</remarks>
    <noticeSignature>
      <noticeDate>06/18/2026</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>02/28/2025</planAdoptionDate>
      </planAdoptionDates>
      <signature>/s/ Scott Lovett</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
