The players
219 companies and organisations that make up ad tech, what each one does in plain English, and where it sits in the chain.
All categoriesWalled gardens & platforms 20DSPs (buy side) 40SSPs (sell side) 32Ad exchanges 8Ad servers 15Header bidding & wrappers 7CTV & video 30Mobile app monetisation 15Attribution & MMPs 8Verification 19IVT & fraud prevention 21Brand safety & ad quality 13Data & CDPs 20Identity 10Clean rooms 6Consent & privacy 8Retail & commerce media 19Native & recommendation 11Creative & DCO 9Agencies & holding companies 11Digital out-of-home 8Audio & podcasts 5Affiliate & performance 9Workflow & ad ops 7Industry bodies 12
Audacy
PrivateMajor US radio group (formerly Entercom) that went private after a 2024 bankruptcy.
Audio & podcastsUSAiHeartMedia
IHRTAmerica's largest radio company and a top podcast publisher, owner of Triton Digital.
Audio & podcastsUSASiriusXM (Pandora & AdsWizz)
SIRI -1.6%Satellite radio company that also owns Pandora and the AdsWizz audio ad-tech platform.
Audio & podcastsUSASpotify
SPOT +0.1%The largest audio streaming service, selling audio, video and podcast ads to free listeners.
Audio & podcastsSwedenTriton Digital
DivisionAudio ad tech and measurement company (streaming and podcast ratings), owned by iHeartMedia.
Audio & podcastsCanada