Companies

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

Matillion is a leading data productivity company that provides powerful, purpose-built data integration and transformation solutions for cloud data warehouses. Its platform helps organizations extract, load, and transform data at scale, enabling data teams to accelerate the delivery of actionable insights and drive business value.

Matomo (formerly Piwik) is a leading open-source web analytics platform that provides organizations with full control over their data while respecting user privacy. Founded in 2007, Matomo offers a powerful alternative to proprietary analytics solutions like Google Analytics, emphasizing data ownership, privacy compliance, and transparency. The platform is used by over 1 million websites across 190+ countries, including governments, enterprises, and small businesses that prioritize data sover...

Matterkind is IPG's addressable activation unit. Originally Cadreon (IPG Mediabrands' addressable platform); rebranded to Matterkind May 7, 2020. Folded into Kinesso 2024-2026 as part of IPG's data+tech consolidation. Now Omnicom-owned post-Nov 26, 2025.

Matterport is a spatial data company that digitizes buildings and spaces into immersive 3D models. Its platform allows users to create, share, and manage digital twins of physical spaces, primarily serving industries like real estate, construction, insurance, and facilities management.

Mautic is an open-source marketing automation platform that empowers businesses to manage email campaigns, lead nurturing, and customer journeys — now part of Acquia following its 2019 acquisition.

Mavrck is an all-in-one influencer marketing platform that helps enterprise brands discover, activate, and measure influencer campaigns at scale — now part of Later's social media management suite.

Max is AppLovin's premium connected TV (CTV) and streaming advertising platform, offering brand-safe inventory across HBO Max content and premium digital environments.

Maxar Technologies was a leading space technology and Earth intelligence company providing satellite imagery, geospatial data, and space infrastructure solutions to government and commercial customers worldwide.

MaxCDN was a leading content delivery network (CDN) provider known for its speed, simplicity, and developer-friendly approach, later acquired by StackPath in 2016.

MaxPoint Interactive was a digital advertising platform that used hyperlocal targeting to connect national brands with local consumers, later acquired by Valassis.

A testing and personalization platform, now part of Oracle Marketing Cloud, that enables marketers to optimize digital experiences through A/B testing and behavioral targeting.

Maze is a rapid user research and testing platform that has revolutionized how product teams conduct user research by making it faster, more accessible, and seamlessly integrated into existing design workflows. The platform provides a comprehensive suite of research methodologies including usability testing, prototype validation, surveys, card sorting, tree testing, and other validation tools that enable teams to gather actionable insights in hours rather than weeks. By democratizing user res...

McCann is a global advertising agency network and part of the Interpublic Group, offering integrated marketing communications, creative services, and brand strategy across 120+ countries.

McCann Dublin is the Irish office of the global McCann Worldgroup network, delivering integrated advertising and creative communications for major brands across Ireland and internationally.

McCann Health is a global healthcare communications and marketing agency network, delivering integrated creative, medical education, and digital health solutions to pharmaceutical and life sciences clients.

McCann Worldgroup Japan is the Tokyo-based arm of the global McCann Worldgroup network, delivering integrated creative, media, and marketing communications services to major brands across Japan.

Dentsu's creative advertising agency, retired in 2022 when consolidated into Dentsu Creative.

US creative agency based in Durham, NC, acquired by Cheil Worldwide in 2012 for an estimated $50M after a period of management-led independence. Operates as Cheil's US flagship; expanded materially in 2023 via the acquisition of influencer-marketing agency August United. Best known for brand-building work for clients including Samsung, Sherwin-Williams, and Travelers. Sources: Adweek + WRAL TechWire + PRNewswire.

McKinsey is a leading global management consulting firm that has expanded into the AdTech Platform space, providing data-driven solutions to help clients optimize their digital advertising and marketing efforts.

Canadian-American marketing holding company (1980-2021); merged into Stagwell August 23, 2021. Ticker MDCA delisted; combined entity took the Stagwell name. Owned Crispin Porter + Bogusky, Anomaly, 72andSunny, Doner, Forsman & Bodenfors, and others.

A measurement and analytics platform that quantifies the incremental impact of advertising across linear TV, streaming, and digital channels.

Measurely is a marketing technology and product analytics platform specializing in A/B testing, multivariate experimentation, and comprehensive user behavior tracking. The company serves as a critical bridge between raw data collection and actionable business intelligence, enabling product teams, marketers, and growth professionals to optimize digital experiences and maximize conversion rates. Measurely's core value proposition centers on making sophisticated experimentation accessible to org...

Medallia is an enterprise experience management platform that captures and analyzes customer, employee, and digital experience signals to drive business improvements.