An authorization framework that allows third-party applications to obtain limited access to user accounts on an HTTP service.
Description
OAuth 2.0 is a widely adopted authorization protocol that enables users to grant third-party applications access to their information without sharing their passwords. It is particularly useful in the context of Single Sign-On (SSO) systems, allowing users to log in once and gain access to multiple applications seamlessly. In OAuth 2.0, users authenticate with a service provider (like Google or Facebook) and authorize an application to act on their behalf. This process involves obtaining an access token that the application uses to make API requests to the service. By decoupling authentication from authorization, OAuth 2.0 enhances security and user experience, allowing for more granular access control. For instance, a user can allow a fitness app to access their Google Calendar events to schedule workouts without granting full access to their Google account. The OAuth 2.0 framework is flexible and can be integrated with various applications, making it a popular choice for organizations seeking to implement SSO solutions.
Examples
- Using OAuth 2.0, users can log into a third-party application like Spotify using their Google account.
- Many mobile apps, like Instagram, allow users to sign in with their Facebook accounts through OAuth 2.0.
Additional Information
- OAuth 2.0 supports multiple grant types, including Authorization Code, Implicit, and Client Credentials, catering to different application needs.
- It is widely used in modern web applications and APIs, ensuring secure access management and enhancing user privacy.