SegmentStream

SegmentStream operates as a B2B SaaS provider of marketing measurement software. It sells a proprietary platform that ingests and models first-party and third-party marketing data, then delivers attribution, incrementality, predictive scoring and budget optimisation outputs. Value is created by helping advertisers and agencies measure true return on advertising spend and improve media allocation across multiple channels. A secondary layer extends this value through API-style access for developers and AI-enabled workflows.

SegmentStream is a UK-based private B2B software company that provides marketing measurement and optimisation tools for performance marketing teams, analytics teams and agencies. Its core platform unifies cross-channel marketing data, performs attribution, incrementality testing, identity resolution and predictive analysis, and helps customers assess advertising ROI across channels including social, search, web and CTV. The company also exposes parts of its measurement stack through an API/server layer for AI-enabled workflows.

The business appears to monetise primarily through subscription software sold to businesses, with pricing shaped by customer size, advertising spend, platform capabilities and support levels. It creates value by operating on customer-owned data warehouse infrastructure, reducing dependence on opaque platform reporting, and by pushing optimisation signals back into advertising platforms to support budget allocation and campaign improvement.