Ad Exchange Services: Market Size & Forecast 2026

The global ad exchange services market sits at roughly USD 27.4B in 2025 (base year) on our central case, with a 7.8% CAGR through 2032, driven by structural shifts in programmatic buying, the rise of connected TV (CTV) and retail media, and a slow but irreversible move toward supply-path optimisation (SPO) on the buyer side. The category is concentrated to a fault: Google Ad Manager dominates display open exchange, the top three independent SSPs (Magnite, PubMatic, Index Exchange) carry the bulk of premium-video and CTV liquidity, and Microsoft Advertising's Xandr exchange sits as the principal non-Google alternative on the open web. > **Analyst Take.** the headline 7.8% CAGR looks credible for the ad exchange services category through 2032, but the composition is wrong. Open-exchange display is decelerating into low single digits, while CTV, retail media, and DOOH are growing at 12-20%

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