Investor Presentaiton

W Strong Revenue Growth at Scale Revenue Growth Acceleration in 2021, Predictable Service Revenue Accounts for ~63% of Revenue II m $ In Millions $1,805 $674 $1,130 2018 63% Total Revenue ~$3,335 23% CAGR CAGR (2018 to 2021E) $2,594 Services 23% $2,163 -$1,250 +36% y/y Products 23% $916 -63% $1,678 -$2,085 +24% y/y (1) 2019 2020 2021E ■Service Product (1) Based on the midpoint of 2021 guidance provided on November 4, 2021. O Fortinet, Inc. All Rights Reserved. 31

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