Search site

Become an AOP member

More details

ID5 Logo Vertical ID5 vertical white


ID5 was created to improve online advertising for consumers, media owners and advertisers, with the ultimate goal to help publishers grow sustainable revenue.

ID5 provides the advertising ecosystem with a transparent, scalable and privacy-compliant identity infrastructure. Its solutions improve user recognition and match rates and provide a stable, consented and encrypted user ID to replace third-party cookies and MAIDs. This enables publishers to better monetise their audiences, advertisers to run effective and measurable campaigns, and platforms to maximise the value of data and inventory for their customers.

Created in 2017 by seasoned ad tech professionals, ID5 services clients globally. For more information about ID5 and its solutions, please visit:

Privacy compliance Programmatic

199 Bishopsgate, London, EC2M 3TY


Joanna Burton

Joanna Burton

Jessica Werner

Jessica Werner


Cookieless thumbnail

Transition to a cookie-less future: A guide for brands

With browsers like Safari and Firefox no longer supporting third-party cookies and Chrome announcing their deprecation from 2023, brands must reconsider how they address audiences. Many brands have still not started their migration journeys as they have been presented with many different solutions and methods to survive the cookie apocalypse, which has created lots of confusion. ID5 has therefore created a guide for brands that explains the steps they need to take to implement shared ID solutions in order to reach cookie-less audiences effectively today and be better prepared for the post-cookie world.

Published: 30 Nov 2021

ID5 event

Protecting and enhancing your first-party data as a publisher

Data is one of your most valuable assets as a publisher. Obviously, you need to have quality content and a great user experience and the myriad of other ingredients that are needed in successful digital publishing. But without a solid of approach to data, your ability to target and monetise your content is significantly hampered. And with third-party cookies on their way out the door, the wealth of first-party data at your fingertips is about to become significantly more valuable still as advertisers look to connect with their audience in a quality publishing environment.

Published: 15 Nov 2021

State of digital identity 2021

ID5 State of Digital Identity Report 2021

The ability to identify users has become an increasingly vital point of interest for all industry players in ad tech as we move closer to the 2022 deadline when third-party cookies are to be blocked from Chrome. Identifying users is crucial for delivering targeted data-driven campaigns.

Published: 07 Oct 2021



Data Provider, OS Data Solution (OSDS) recognised that the restrictions of third-party cookies prevented them from activating data especially in Safari and Firefox. OSDS wanted to reclaim unaddressable audiences to better monetise their assets and future-proof their business in preparation for the post-cookie world.

Published: 07 Oct 2021