Private Lift Measurement helps advertisers understand how their campaigns are performing, using a privacy technology called secure multi-party computation. Facebook open sourced this framework and is inviting companies to develop measurement products based on the technology.
The on-device learning is a technology that processes data locally on each device rather than sending individual data to a remote server or cloud. Facebook says on-device learning can improve the ad experience.
This 2 projects are Facebook response to a new privacy regulatory landscape, and new privacy measures from Apple and Google.