Android apps for Windows 11 are available through the Amazon App Store, but this does not support Google Play. However, Amazon has now officially announced that they will be allowing new AAB format apps in the Amazon App Store.
However, they continue to support the APK format, allowing Windows 11 users to take advantage of the AAB format.
The main advantage of this is the ability to reduce the size of apps through the AAB format. It also hopes to provide all the features of the AAB format in the future through the Amazon App Store.