BigCommerce Investor Day Presentation Deck

B ENTERPRISE BC Enterprise plan serves 65% of $10B platform spend TAM Worldwide digital commerce applications revenue 2020-2025 Revenue ($B) Revenue ($B) 12 10 00 + 2- Total: 5.4 3.2 2.2 2020 4.0 - 2.3 2021 On-premise - 2% CAGR 4.8 2.2 2022 5.7 SaaS + 20% CAGR 2.2 2023 Source: IDC - Ecommerce Applications Forecast 2021-2025, published 2021 6.8 2.1 2024 Total + 13% CAGR Total: $10.0B 7.9 2.0 2025 BigCommerce's Enterprise plan targets the 66% of market spend done by mid-market and large enterprise businesses Global commerce platform technology spend, 2021 38% Enterprise 34% SMB 28% Mid-market Source: Forrester - Commerce Platform Technology Forecast, 2016-2021 (Global), 2017

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