What is OAuth?

OAuth is an open-standard authorization protocol or framework that describes how unrelated servers and services can safely allow authenticated access to their assets without actually sharing the initial, related, single logon credential. It allows users to share their private resources stored on one site with another site without having to hand out their credentials, typically supplying username and password tokens instead.

The most frequently used fields for OAuth are:

1. Authorization: This is the process of granting access to a user or application to access resources on a server.
2. Authentication: This is the process of verifying the identity of a user or application.
3. Token: This is a unique string of characters that is used to identify a user or application.

Technology related to OAuth includes OAuth 2.0, an open standard for authorization that provides a process for end-users to authorize third-party access to their server resources without sharing their credentials. OAuth 2.0 is used by many websites and applications, including Facebook, Google, and Twitter, to allow users to securely access their data. Additionally, OAuth is used by many APIs to provide secure access to data and services.