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ID5 is the leading next-generation identity solution provider combining addressability and data protection technologies to make digital advertising more efficient, valuable, and safe for all stakeholders, consumers included. ID5 acts as an identification infrastructure that connects and supports the digital advertising ecosystem by enabling efficient user identification across all environments. We help publishers make their audience addressable and to better monetize their inventory and we enable advertisers to reach their audiences with personalized messages and to measure the results of their efforts. Everything is done in compliance with data protection regulations. Our privacy-by-design encryption technology respects and enforces people’s data sharing preferences in the advertising value chain. Created in 2017 by seasoned ad tech professionals, ID5 services clients globally. For more information about ID5 and its solutions, please visit www.id5.io

ID5.io Questions

The ID5.io annual revenue was $9.5 million in 2026.

Mathieu Roche is the Co-founder and CEO of ID5.io.

61 people are employed at ID5.io.

ID5.io is based in London, England.

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