> Web Push on Apple’s platforms uses the same Apple Push Notification service that powers native push on all Apple devices. You do not need to be a member of the Apple Developer Program to use it.

This has... interesting implications for natives apps, at least at first glance.

Also, it's not clear to me how you send to a website using this. Has Apple wildly overhauled APNS server-side since I implemented a sender-client for it years and years ago? That design was excellent, but you did need a push key tied to an app to even connect to the socket IIRC. Do they issue those for websites, now? Does it work totally differently? How does validation work?