What is "QQ login OAuth2.0"

OAuth: OAuth (Open Authorization) is an open standard that allows users to authorize third-party websites to access their information stored on another service provider without providing their username and password to the third-party website or share everything about their data.

QQ login OAuth2.0: For user-related OpenAPI (such as obtaining user information, dynamic synchronization, photos, logs, sharing, etc.), in order to protect the security and privacy of user data, third-party website access You need to explicitly ask for authorization from the user before accessing user data.
QQ login OAuth2.0 uses the OAuth2.0 standard protocol for user authentication and user authorization. Compared with the previous OAuth1.0 protocol, its authentication process is simpler and more secure.
Therefore, please upgrade websites that use the OAuth 1.0 protocol to the OAuth 2.0 protocol. For details on the upgrade method, please see the [QQ Login] OAuth1.0 to OAuth2.0 upgrade guide.

Tips:
If you want to do further reading on the OAuth2.0 open standard, please see: OAuth Standard (English) | OAuth Wikipedia (Chinese)