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OAuth is a great solution to a difficult problem, but still manages to sound complicated since it involves multiple steps (for OAuth 1) and multiple flows (for OAuth 2) - and the two versions are nothing alike. This session gives a high level overview of which problem "OAuth" actually solves, covers how both OAuth 1 and OAuth 2 fit into existing architecture and when to use them, and gives resources for finding out more about each. If you're sharing user data between applications and want to do so securely, then this session is for you.