Here is exactly what Meta’s documentation says about the big changes to Aggregated Event Measurement and conversion The campaign is the foundation of your Facebook ad. This is where you'll set an advertising objective, which defines what you want your ad to achieve. More.
1. You no longer need to prioritize eight conversion events per domain for web conversion The Performance Goal is chosen within the ad set and determines optimization and delivery. How you optimize impacts who sees your ad. Meta will show your ad to people most likely to perform your desired action. More (BIG!).
2. The Aggregated Event Measurement is Meta's protocol for handling tracking opt-outs from iOS devices. AEM initially required advertisers to configure and rank eight events and verify their website, but those requirements were removed in 2023. Aggregated Event Measurement still exists, but Meta handles it on the back-end to comply with Apple requirements on privacy. More tab in Events Manager has been removed because you no longer need to configure your web events. Of course, this is only if you have these changes.
3. You don’t need to turn on value sets in order to use Value Optimization.
4. You aren’t required to verify your website domains for purposes related to event configuration. This is especially big for situations where A conversion is counted whenever a website visitor performs an action that fires a standard event, custom event, or custom conversion. Examples of conversions include purchases, leads, content views, add to cart, and registrations. More occur on third-party website where you have your pixel but can’t verify the domain.
5. You don’t need to select a conversion domain when you create an ad in Ads Manager.
These changes are still rolling out and there’s a lot we don’t yet know.