AEO vs VBO (App)

Two Meta app-promotion optimization modes: AEO bids toward a single in-app event, VBO bids toward the total purchase value those events carry.

Both read from your app's event signal, but they optimize for different things. App Event Optimization tells Meta to find users likely to fire one chosen event, a purchase, a subscription start, a level complete, and it treats every instance of that event as equal. Value Optimization looks at the revenue attached to each event and steers delivery toward users predicted to spend more, so a user worth ten times another is worth chasing ten times harder. VBO needs clean value parameters flowing through the SDK before it will run.

Take a mobile game with in-app purchases ranging from a small coin pack to a large one. On AEO, Meta optimizes for anyone likely to buy at all and happily brings you a crowd of small spenders. Switch to VBO and delivery tilts toward the players whose predicted basket is large, so the same budget chases higher return per install.

VBO is only as good as the values you send it. If your purchase events report inflated, missing, or same-for-everyone values, the model optimizes toward noise and quietly underperforms plain AEO. People flip to Value Optimization to raise return and forget the model is trusting numbers their SDK never validated.

AEO counts events. VBO weighs them.