Implement Account Binding - Requests

Question

I asked a Google lawyer Dev Advocate for help, because I was struggling to embed a link to an account in the Google Actions application, he sent me a link to a documentation article that I had already read and suggested I also contact Stackoverflow. Having already made the second proposal and struggled to find the exact answers to my questions, I crushed the link to the document article here, add all my queries and send it back to Dev Advocate in the hope of getting more clarification, especially as a reminder that the documentation can be read by complete beginners in this thread and that nothing should be given for granted.

This article, I mean https://developers.google.com/actions/identity/account-linking

My inquiries are below:

• What is the difference between implicit and authorization code stream. "Authorized code" is selected in the article, why?
• Although I found https://stackoverflow.com/a/168956/ ... where you can get your client ID and secret, do you think it would be nice to add a link to the article?
• The authorization URL is something, instead I did not find a clear guide. Some qaru.site/questions/1688956 / ... may be used 2-address URL Google OAUth (for URL authorization, enter https://accounts.google.com/o/oauth2/v2/auth for URL-addresses Token enter https : //www.googleapis.com/oauth2/v4/token ), but a recent google policy change suggests

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