Adobe Experience Platform Identity Service is the more common of the two in our index: it runs on 787 websites against 353 for Tealium, and 65 sites use both. Counts come from real scans, not vendor claims.
Adobe Experience Platform Identity Service creates identity graphs that hold customer profiles and the known identifiers that belong to individual consumers.
Tealium provides a sales enterprise tag management system and marketing software.
65 sites run both Adobe Experience Platform Identity Service and Tealium. That is 18% of the sites using Tealium, the smaller of the two.
Want to know which one a particular site uses? Look it up and see its whole stack, or compare two sites side by side.