Client credentials are sent using HTTP Basic authentication
Client credentials are included in the request body as form parameters.
Client authenticates using a signed JWT created with the client secret.
Client authenticates using a signed JWT created with a private key.
Client authenticates using a TLS client certificate issued by a trusted certificate authority.
Client authenticates using a self-signed TLS client certificate.
Supported OAuth 2.0 client authentication methods.
These methods define how a client authenticates itself when calling the authorization server token endpoint.