What methods of API authorization do you know?

Among the common methods of API authorization, the following can be distinguished:

• Basic Auth — transmitting the login and password in the HTTP header, usually as a base64-encoded string.
• Token-based Authentication — using access tokens, such as JWT (JSON Web Token), which are transmitted in the Authorization header.
• OAuth 2.0 — an authorization protocol that allows limited access to user resources without transmitting the password.
• API Keys — unique keys that the client transmits in requests for identification.

Example of using a token in the header:

GET /api/resource HTTP/1.1
Host: example.com
Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...