@Costin Chiulan :
Yes, it is possible to use Identity Provider (IdP) tokens to authenticate and access the Databricks REST API for workspaces provided by AWS.
Databricks supports OAuth 2.0/OpenID Connect (OIDC) for identity management and authentication, which allows the use of tokens from external IdPs like AWS Cognito, Okta, Ping Identity, and others. You can configure Databricks to use your IdP as the identity provider and then obtain an access token for the authenticated user using the OAuth 2.0/OIDC flow.
Once you have obtained the access token, you can use it to authenticate and access the Databricks REST API by setting the Authorization header to Bearer <access-token> in your API requests. You can also use the Databricks CLI with the token to perform various operations on your Databricks workspace.
You can find more information on how to configure Databricks for OAuth 2.0/OIDC and how to obtain and use access tokens in the Databricks documentation.