Apple is making changes to its App Store rules in the EU to comply with the European Commission's order and avoid fines.
Developers can now promote in-app offers for digital goods and services that can redirect users outside the app.
New fees for developers offering external purchases include acquisition fees, store services fees, and a Core Technology Commission.
Developers in the EU can sell their apps not only through alternative app marketplaces but also on their own websites, subject to specific requirements.