As a developer it was a pretty exotic experience. Their OAuth service is unlike any other big name provider I'd used. Some day soon I hope to open source my App

As a developer it was a pretty exotic experience. Their OAuth service is unlike any other big name provider I'd used. Some day soon I hope to open source my Apple backend integrations in TypeScript, because Apple provides no backend SDKs, at least not for Node/JS/TS. Lots of people seem to use Sign In With Apple, though. They make it really nice for the user. The email relay thing is pretty neat. The thing that troubles me with OAuth is that if you don't provide apps with some other way to sign in and you lose access to you OAuth account, you lose access to all your applications.