Google announced the privacy sandbox on Android at the start of the year, which is a new system made to replace the existing third-party cookie schemes. A more privacy-centered method to serve ads.

The privacy sandbox limits sharing of user data with third parties operating without cross-app identifiers, including ad ID. A new preview provides dives with an early look at the Sandbox SDK runtime and topics API. A better understanding of how they’ll fit into their apps and processes once it’s officially released.
Devs can also get access to an early version of the fledged API, allowing sites to run remarket to existing users that are serving users ads, reminding them that they have left items in their shopping cart & to just check out already.
