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Amazon Ad Server

Amazon Ad Server

Defunct

Seattle, Washington, United States · Founded 2019

51-200 employees · AMZN

Sourced & current · updated Oct 23, 20261 of 4 facts verifiedWebsite unavailable

Amazon Ad Server was a global ad-serving platform, rebranded from Sizmek Ad Suite in March 2023, that shut down by the end of 2024.

Where they sit

Stack tier: Core Platforms (S)

Creative Management PlatformDemand Side Platform (DSP)Ad Server

Operated as the second-largest ad server globally at acquisition, but failed to gain meaningful share against Google's dominant ad server before shutting down in 2024

Ownership

Parent: Amazon Ads

Competitors

Pre-call brief from ATDb — sourced from the live database, current as of Oct 23, 2026. Not a static screenshot.