ID5

UK-based ID5 provides several customer identification solutions specialized in digital advertising. Its identity cloud allows users to exchange first-party customer signals and provide insights in a privacy-compliant manner. ID5’s solutions are used by hundreds of publishers, advertisers, and AdTech platforms including sell-side and demand-side ad platforms (SSPs and DSPs), including Adasta, CPEx, Semasio, and Adform. 

As an early entrant in the “cookie-less” customer identifier space, Id5 claims to have a head start over its competitors. ID5’s customer identifier also complies with data privacy regulations such as the GDPR and CCPA and in April 2022, ID5 became the first Neutronian Quality Index (NQI)-certified identity solution.

Key customers and partnerships

In March 2021, ID5 partnered with Narrative, a data streaming platform, allowing ID5 users to access more than 55 data suppliers to enrich customer data.In September 2024, the company partnered with Zeotap, a customer data platform (CDP), to enable data activation through privacy-compliant identifiers that operate independently of cookies.