Fastly: Innovators Platform

Revenue fastly. Momentum-at-a-Glance At IPO (May 2019) $145M/38% YoY For the year ended December 31, 2018 Today $246M / 45% YoY LTM as of June 30, 2020 $75M / 62% YoY Q2 2020 as of June 30, 2020 Average Revenue Across All Enterprise Customers* $530K+ For the year ended December 31, 2018 $716K+ LTM as of June 30, 2020 Dollar Based Net Expansion Rate* ** 132% As of December 31, 2018 Enterprise Revenue as a % of total revenue 84% As of December 31, 2018 137% As of June 30, 2020 88% As of June 30, 2020 Annual Revenue Retention Rate*** fastly. ©2020 Confidential 98.9% As of December 31, 2018 99.3% As of December 31, 2019 * Enterprise customers are defined as customers with LTM revenue in excess of $100,000 over the previous 12-month period. Fastly had 304 Enterprise customers (at 6/30/20) which generated 88% of our trailing twelve-month total revenue. ** We calculate Dollar Based Net Expansion Rate by dividing the revenue for a given period from customers who remained customers as of the last day of the given period (the "current period") by the revenue from the same customers for the same period measured one year prior (the "base period"). The revenue included in the current period excludes revenue from (i) customers that churned after the end of the base period and (ii) new customers that entered into a customer agreement after the end of the base period. ***We separately monitor customer retention and churn on an annual basis by measuring our annual revenue retention rate, which we calculate by multiplying the final full month of revenue from a customer that terminated its contract with us (a "Churned Customer") by the number of months remaining in the same calendar year ("Annual Revenue Churn"). The quotient of the Annual Revenue Churn from all of our Churned Customers divided by our annual revenue of the same calendar year is then subtracted from 100% to determine our annual revenue retention rate 3

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