I have an existing website and building a new iOS app, and I am looking to introduce Sign in with Apple to allow users to login across both platforms.
We use AWS for our account authentication (Cognito) already, so I would be setting up federation for Sign in with Apple on AWS.
My only confusion is whether I need to set up two separate identifiers in Apple Developer for each platform (one for web and one for iOS) or can I use the same one across platforms. Our app is already live, so it already has an identifier – can I just add Sign in with Apple to the existing identifier and then have my web platform use the same identifier?
