PubMatic

Redwood City, California, United States · Founded 2006

501-1000 employees · PUBM

Sourced & current · updated Jul 16, 2026Website

PubMatic is a sell-side platform (SSP) that provides a comprehensive digital advertising platform for publishers to maximize their ad revenue. The company enables publishers to connect and monetize their digital properties through real-time bidding and programmatic advertising.

Where they sit

Stack tier: Ecosystem Services (A)

Supply Side Platform (SSP)Programmatic Platform

One of the top independent SSPs globally, competing directly with Magnite, Index Exchange, and OpenX, with a strong focus on CTV, mobile, and omnichannel programmatic advertising.