Google

Dominant global player across the full ad tech stack — search advertising, programmatic display, video advertising (YouTube), publisher ad servers (SSP), advertiser buying tools (DSP), and ad exchange — as well as the world's leading search engine and a major cloud and consumer technology provider.

Google is a technology company whose zero-priced platforms — including Search, Maps, and YouTube — are funded primarily through behavioral advertising, where consumers are shown tailored advertisements while using the services.¹ Google holds a dominant position in both the supply-side market for publisher ad tools (SSPs) and the demand-side market for advertiser buying tools (DSPs), with an ad exchange mediating between the two sides by matching publishers' available ad inventory against advertiser demand.¹ Google's dominance across the ad tech stack is significantly reinforced by the billions of users it attracts through adjacent services such as Search, Maps, and YouTube, which channel enormous volumes of internet traffic into its advertising platforms.¹ By 2021, Google's ad tech division was the company's second-largest business behind Search, generating approximately $31.7 billion in revenue, and as of 2023 its advertising business accounted for an estimated 80% of total company revenue.² Beyond the open web, Google is expanding its advertising focus into areas such as Connected TV and retail ads, and may increasingly rely on its own "walled garden" ecosystems — Search, YouTube, and Maps — where it can maintain greater control over ad inventory and targeting.³ Google has faced major regulatory and legal consequences for its ad tech practices, including a US court ruling that it violated antitrust law by monopolizing open-web digital advertising markets, and a €2.95 billion fine imposed by the European Commission for abusive practices in publisher ad servers and programmatic ad-buying tools.^3,4 Source 1: utrechtlawreview.org — Google Adtech – Break Up or Break Out? Source 2: wikipedia.org — United States v. Google LLC (2023) Source 3: wolterskluwer.com — Impact of the EC decision on Google's AdTech Source 4: justice.gov — Department of Justice Prevails in Landmark Antitrust Case ...