Datadog Investor Day Presentation Deck

Strong customer growth # of Customers with ARR $1M+ 2 FY16 11 DATADOG FY17 27 FY18 54 FY19 101 FY20 145 2021 # of Customers with ARR $100K+ 126 FY16 236 FY17 438 FY18 837 FY19 1,228 FY20 1,570 2021 Average ARR:~$500k We updated the definition of MRR as of the quarter ended September 30, 2021 to capture usage from subscriptions with committed contractual amounts and applied this change retroactively. 97

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