Comscore is a media measurement and analytics company that provides audience ratings and data to TV broadcasters, digital publishers, streaming platforms, advertisers, and advertising agencies. Comscore's core function is to act as an independent third party that certifies how many people — and what kind of people — are watching content or seeing ads across linear TV, connected TV, desktop, mobile, and theatrical. Advertisers and agencies use Comscore's data to plan and buy advertising; publishers and content owners use it to price and package inventory. Comscore collects data from opt-in consumer panels, publisher tags, satellite and cable operator feeds, smart TV data covering tens of millions of screens, and global box office data. Revenue breaks into two segments: Content & Ad Measurement (~85% of revenue) and Research & Insight Solutions (~15%). Within Content & Ad Measurement, the largest piece is syndicated audience products — subscription-based TV and digital ratings that serve as industry "currencies" for ad transactions. The fastest-growing piece is cross-platform products, which include Proximic (programmatic audience targeting) and campaign measurement tools that deduplicate audiences across TV, CTV, and digital. Comscore also measures global theatrical box office. The business model is largely subscription-based for syndicated products and usage-based for cross-platform tools. The cost structure is heavily fixed, with relatively low incremental costs per additional customer. Legacy national TV and digital syndicated products face pressure from traditional media budget cuts, while local TV and cross-platform products are growing.