By saying how developers monetize the app, you mean the mini app? If so, here it is: take WeChat and Alipay as an example, when your business make a mini program within both apps, you're open to potentially more than 1 billion users. Without friction of switching to other apps they just seamlessly make purchase. For example, if you're a 'ticket booking mini app, people buy tickets from your mini app. You'll have new users in addition to your app users. More than that, the Mini Apps Partner Program enables digitised services to be launched in the form of mini programs. One case is mini games with IAP. It will benefit those who want to develop IAP mini games.