Who uses OAuth 2.0?

In the previous section, we mentioned that OAuth 2.0 has become one of the most important protocols for applications and service providers today. But how important is it? Here is a short, non-exhaustive list of some of the biggest supporters of the OAuth 2.0 protocol, along with some of the capabilities that they provide:

  • Google: You can leverage a multitude of Google's services by interacting with their APIs via OAuth 2.0
  • Facebook: Facebook's social graph is accessed via OAuth 2.0 and allows users to do a tremendous amount of things, including posting to their wall and sending messages
  • Instagram: Instagram allows you to access a user's feed and post comments and likes
  • LinkedIn: Post comments, share links, and gather engagement ...

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