77 merged AdTech companies

Golin was a global public relations agency that came to Omnicom with its acquisition of Interpublic in November 2025.

Hearts & Science was a data-driven media agency network launched by Omnicom Media Group in 2016.

Ketchum is a global public relations agency founded in 1923 and owned by Omnicom since 1996.

Mediahub was a media agency network that came to Omnicom with the Interpublic acquisition in November 2025.

Amazon Freevee was a free, ad-supported streaming service — originally launched as IMDb TV — that operated as a standalone product within Am…

Hakuhodo DY Media Partners is an integrated media company formed by consolidating the media operations of three advertising agencies — Hakuh…

IPG Mediabrands was the data management and media buying arm of the Interpublic Group of Companies, which was acquired by Omnicom in 2025 an…

Iconic creative network ("Doyle Dane Bernbach") — one of the original Mad Men shops.

Independent media company founded by David Ellison in 2010.

Publicis Worldwide was Publicis Groupe's global creative agency network.

JW Player was a leading video streaming and data insights platform that merged with Connatix to form JWP Connatix, the industry's most compr…

Sizmek was a global, multichannel ad server — now merged into Amazon Ad Server — used by advertisers and agencies to create, manage, and del…

VMLY&R Japan was the Tokyo office of WPP's VMLY&R network.

Finecast is WPP Media's CTV / addressable TV trading desk — launched 2017 by GroupM.

CSM Sport & Entertainment is a global sports and entertainment marketing agency specializing in sponsorship consulting, athlete representati…

D.A.Consortium (DAC) was Hakuhodo DY Holdings' internet advertising company and digital media representative, founded in 1996.

VMLY&R Health was VMLY&R's healthcare marketing network, created in 2018 when WPP folded Sudler into VMLY&R.

IRI, now operating as Circana, was a data analytics and market research company headquartered in the United States that provided consumer, s…

NPD Group, now operating as Circana following its 2022 merger with IRI, was a global market research and consumer intelligence firm that mon…

Yahoo Gemini was a combined search and native advertising platform, also known as Verizon Media Native, that operated as part of Yahoo's bro…

Superunion was WPP's global brand agency, formed in 2018 from five WPP agencies.

Gimlet Media was a podcast production company and network that created narrative podcasts and was acquired by Spotify in 2019.

Infutor is a leading identity resolution and data enrichment company that specializes in providing comprehensive consumer and business data …

Intouch Group was a healthcare marketing agency network founded in 1999 as Intouch Solutions.

Reactful was a marketing automation platform that specialized in personalized email and web messaging for e-commerce businesses.

Xaxis is GroupM's programmatic advertising platform and outcome media specialist, providing data-driven digital media buying and optimizatio…

Berlin digital agency acquired by IBM April 2016 and rebranded as IBM iX Berlin.

ecx.io was a digital agency based in Düsseldorf, Germany.

Adstream was a platform that delivered ad creative to TV, digital and print media and managed brand assets for advertisers and agencies.

Dentsu Group digital agency in Tokyo, formed in January 2016 by merging Dentsu iX with Isobar Japan.

PatientPop was a practice growth platform for healthcare providers that combined marketing automation, patient engagement tools, and reputat…

Australian podcast hosting platform acquired by Spotify 2021.

Geometry Global was WPP's global brand activation and shopper marketing network, specializing in commerce, experiential, and promotional mar…

Berlin / Munich product design and innovation agency (~50 employees, BMW / Bosch / VW clients), acquired by PwC early 2020 (some sources say…

Crackle was a free, ad-supported streaming video service that offered movies and TV shows before shutting down in April 2025 following its p…

J.

Ligatus was a Cologne, Germany-based native advertising platform — leading native ads in Europe with 37B+ monthly impressions pre-acquisitio…

RhythmOne — recorded in ATDb as the acquirer/parent of one or more AdTech companies (s375 lineage backfill).

Amsterdam digital marketing agency (founded 2010, also office in Ho Chi Minh City), acquired by Deloitte Digital May 1 2019.

Zaventem (Belgium) signage and interactive-experience agency, acquired by Deloitte Belgium Feb 1 2018.

Rocket Fuel (acquired by Sizmek) was an AI-powered programmatic media buying platform that used predictive algorithms for ad targeting and o…

Stockholm brand strategy / innovation / digital agency (~50 employees), acquired by PwC May/June 2017.

Greensboro NC omni-channel data and marketing services firm acquired by Deloitte May 2017.

thePlatform was a Seattle company that built software for managing and publishing online video.

Isobar Japan was the Tokyo-based Japanese agency of the Isobar digital network.

Visually was a content creation marketplace connecting brands with designers and creators for visual content including infographics, videos,…

Hong Kong creative / digital / marketing agency, acquired by PwC February 2016.

Triggit was a retargeting and real-time bidding platform that pioneered programmatic display advertising, known for its early integration wi…

Wisemetrics was a marketing analytics platform that provided data visualization and reporting tools for digital advertising campaigns.

Offline consumer purchase data platform acquired by Oracle in December 2014 for $1.2B.

GraphicMail is a global email marketing service provider specializing in comprehensive email campaign solutions with integrated social media…

Columbus OH (with Chicago + NYC) digital agency acquired by IBM February 2016 and rebranded into IBM iX.

Advertising.com was a digital advertising company founded in 1998 by brothers Scott and John Ferber that was acquired by AOL in 2004 for $43…

24/7 Media was a pioneering digital advertising network and ad serving company that provided online advertising solutions to publishers and …

Miami digital experience agency (~120 consultants), acquired by PwC 2013.

Seattle social-media agency founded 2007, acquired by Deloitte Digital Oct 21 2013.

London digital analytics / web optimisation consultancy (~20 consultants), acquired by PwC March 2012.

Dentsu International was a multinational media and digital marketing communications company headquartered in London, United Kingdom, that op…

FCB was one of the largest global advertising agency networks, absorbed into Omnicom's BBDO on December 1, 2025.

Oracle BlueKai was a cloud-based data management platform, part of Oracle Marketing, formed when Oracle acquired the company in 2014 for app…