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Companies

3,756 companies in the AdTech ecosystem

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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

Alooma

Acquired

Data 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.

Data & AnalyticsCustomer Data PlatformTel Aviv, California
Alphabet Inc.

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.

Demand Side Platform (DSP)Ad ServerMountain View, California
AlphaSense

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.

Data & AnalyticsMarketing TechnologyNew York, New York
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Alphonso

Rebranded

TV 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.

Data & AnalyticsAttribution & AnalyticsCincinnati, Ohio
Alteryx

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.

Data & AnalyticsMarketing AnalyticsIrvine, California
Altice International

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).

Marketing Technology
Altice USA

Altice USA

TV/Video Advertising & Addressable TV

Connected TV PlatformLocal AdvertisingLong Island City, New York
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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).

Data & AnalyticsReal Estate MarketingToronto, Ontario
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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.

Data & AnalyticsMarketing PlatformMadrid, Madrid
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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).

Attribution & AnalyticsCustomer Data PlatformMadrid, Madrid
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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.

Connected TV PlatformVideo Advertising PlatformBangalore, Karnataka
Amazon

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.

Demand Side Platform (DSP)Connected TV PlatformSeattle, Washington
Amazon A9

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.

PPC ManagementE-commerce MarketingPalo Alto, California
Amazon Ad Server

Amazon Ad Server

Defunct

Ad 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.

Creative Management PlatformDemand Side Platform (DSP)Seattle, Washington
Amazon Ads

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.

Attribution & AnalyticsDemand Side Platform (DSP)Seattle, Washington
Amazon Attribution

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.

Attribution & Analytics
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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.

Creative PlatformRetail Media PlatformSeattle, Washington
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Amazon Brand+

Programmatic Advertising / Brand Advertising

Companion to Performance+, launched globally 2025 at unBoxed. AI-driven brand-awareness campaign type within Amazon DSP.

Demand Side Platform (DSP)Video Advertising PlatformSeattle, Washington
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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.

Marketing TechnologySeattle, Washington
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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.

Attribution & AnalyticsDemand Side Platform (DSP)Seattle, Washington
Amazon DSP

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.

Demand Side Platform (DSP)Retail Media PlatformSeattle, Washington
Amazon Fire TV

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.

Connected TV PlatformVideo Advertising PlatformSeattle, Washington
Amazon Freevee

Amazon Freevee

Defunct

Connected 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.

Connected TV PlatformVideo Advertising PlatformSeattle, Washington