http - How is it possible that Google and Youtube, outlook.com and msn.com use same account? -


how browsers share credentials belonging 1 domain other? asked in question, if log 1 service, i'm automatically logged other service? authentication scheme , how credentials shared?

the answer use oauth or it. can read @ https://en.wikipedia.org/wiki/oauth or google oauth. 1 site receives username , password. others granted permissions site.


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