Question

Your company uses a third-party SaaS expense system that exposes a REST API secured with OAuth 2.0. Users must sign in with their own SaaS account so that the API returns only their personal expense data. You are building a custom connector in Power Platform to let makers call this API from cloud flows on behalf of the signed-in user. Which authentication type should you configure for the custom connector?

Accepted Answer

OAuth 2.0 with the Authorization Code grant, providing the client ID, client secret, authorization URL, token URL, and scopes

Answer

API Key authentication, prompting each user to paste their personal API key

Answer

Basic authentication, collecting each user's SaaS username and password

Answer

OAuth 2.0 with the Client Credentials grant, using a single application client ID and secret