Companies
3,756 companies in the AdTech ecosystem
Allison+Partners
Public Relations / Communications
Global PR/communications network within Stagwell. Founded 2001; multiple Stagwell-affiliated PR networks include Allison+Partners, SKDK, HUNTER, and Targeted Victory.
Alooma
AcquiredData Integration / ETL / Data Infrastructure
Alooma was a cloud data pipeline platform that enabled businesses to integrate, transform, and stream data into their data warehouses in real time — acquired by Google in 2019.
Alphabet Inc.
Digital Advertising / AdTech
Alphabet Inc. is the parent company of Google and several other businesses. Through Google, Alphabet dominates the digital advertising industry with the largest ad network, search advertising platform, and programmatic buying/selling platforms. Google's advertising products generate over $200 billion annually, making it one of the two dominant forces (with Meta) in digital advertising.
AlphaSense
Market Intelligence / Business Intelligence
AlphaSense is a market intelligence and search platform that helps business professionals make better decisions by providing instant access to critical information from a vast universe of public and private content. It leverages AI to extract insights from financial documents, news, transcripts, and more.
Alphonso
RebrandedTV Data & Measurement
Alphonso is a TV data and measurement company that uses Automatic Content Recognition (ACR) technology to track viewing behavior across smart TVs and connected devices for advertising attribution.
Alteryx
Analytics Automation & Data Preparation
Alteryx is an analytics automation platform that enables organizations to automate data preparation, blending, and advanced analytics workflows through a low-code/no-code interface.
Altice International
Telecommunications / Media Holding (Europe)
Altice International (also Altice Europe) is the European telecommunications + media holding company controlled by Patrick Drahi. Distinct from Altice USA (the US-listed sister company). Owned Teads from 2017 to February 2025, when Outbrain acquired Teads from Altice for $1B+ (cash + 35M shares).
Altice USA
TV/Video Advertising & Addressable TV
Altus Group
Real Estate Technology / Data Analytics
Altus Group — recorded in ATDb as the acquirer/parent of one or more AdTech companies (s375 lineage backfill).
Amadeus
Travel Technology / Data & Audience Targeting
Amadeus is a global travel technology company providing IT solutions and distribution systems for airlines, hotels, travel agencies, and other travel industry players.
Amadeus IT Group
Travel Technology / Data & Audience Intelligence
Amadeus IT Group — recorded in ATDb as the acquirer/parent of one or more AdTech companies (s375 lineage backfill).
Amagi
Connected TV/OTT Advertising & Broadcast Technology
Cloud-based SaaS platform providing broadcast infrastructure and targeted advertising solutions for streaming TV and connected TV environments.
Amazon
Digital Advertising, Retail Media, Programmatic Advertising
Amazon.com, Inc. is a multinational technology company that focuses on e-commerce, cloud computing, digital streaming, and artificial intelligence.
Amazon A9
Search Technology & Advertising Infrastructure
Amazon's subsidiary that powers product search and advertising technology across Amazon's e-commerce platform and advertising services.
Amazon Ad Server
DefunctAd Serving & Creative Management
Amazon Ad Server (formerly Sizmek) is Amazon's enterprise-grade ad serving and creative management platform, enabling advertisers and agencies to manage, deliver, and measure campaigns across channels.
Amazon Ads
Digital Advertising / Retail Media
Amazon's advertising platform offering sponsored ads, display advertising, and video solutions across Amazon properties and third-party sites.
Amazon Attribution
Marketing Attribution / Cross-Channel Measurement
Amazon Attribution is Amazon Ads' measurement tool that reports on the impact of non-Amazon advertising channels (Google, Meta, search) on shopping activity on Amazon. Helps brands measure the full marketing funnel ending at Amazon purchases.
Amazon Brand Innovation Lab
Creative Services / Retail Media / Digital Advertising
Amazon Ads' in-house creative agency, present in 17 countries globally; multi-Cannes-Lions winner. Distinct creative-services business unit within Amazon Ads.
Amazon Brand+
Programmatic Advertising / Brand Advertising
Companion to Performance+, launched globally 2025 at unBoxed. AI-driven brand-awareness campaign type within Amazon DSP.
Amazon CloudFront
Content Delivery Network / Cloud Infrastructure
Amazon's global content delivery network (CDN) service that accelerates delivery of websites, APIs, video content, and other web assets with low latency and high transfer speeds.
Amazon Complete TV
Connected TV (CTV) Advertising / Programmatic Media Buying
AI-driven cross-publisher CTV planning solution launched March 4 2025 in Amazon DSP. Combines Prime Video + premium publishers for 95% addressability claim.
Amazon DSP
Programmatic Advertising / Demand-Side Platform
Amazon's demand-side platform enabling programmatic advertising across Amazon properties and third-party sites, leveraging Amazon's unique commerce and audience data.
Amazon Fire TV
Connected TV / Streaming Advertising
Amazon's streaming media platform and connected TV operating system that delivers content and advertising to millions of households globally.
Amazon Freevee
DefunctConnected TV / Streaming Advertising (AVOD)
Amazon Freevee was Amazon's free, ad-supported streaming service that offered movies, TV shows, and original content before being folded into Prime Video in August 2025.