OAuth is an open standard for authorization, allowing users to grant third-party applications limited access to their resources without sharing passwords. It enables secure API authorization workflows by providing delegated access tokens. OAuth simplifies user authentication for developers while ensuring user privacy and security.

Firstly, the user grants permissions to a client application through an authorization server. Then, the client receives an access token, which it presents to access protected resources on behalf of the user. This token grants temporary, scoped access, minimizing the risk of unauthorized access. OAuth is widely adopted in web and mobile applications, offering a standardized approach to secure authorization.

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