@bjoern__koth thanks!For the web and app (events) I would use IdentityMap. If the user is not loged in then - ECID primary If user logs in is it possible to use then email as a Primary?
The best way to track identities is Identity Map?Should I use email as a primary identity?https://developer.adobe.com/client-sdks/edge/identity-for-edge-network/api-reference/#identitymap
In mobile app appending ECID to URL. This is the method to use?https://developer.adobe.com/client-sdks/home/base/mobile-core/identity/api-reference/#appendtourl--appendvisitorinfoforurl