How can OAuth 2.0 authentication be implemented when connecting Business Central with an external API?

Business Central integrations often need secure communication with external applications and APIs. Explore OAuth 2.0 concepts such as authorization servers, access tokens, client credentials, scopes, and token-based authentication, along with how these concepts apply to Business Central integrations. Developers should also understand secure credential management and why secrets should not be hard-coded into extensions. This knowledge helps Business Central developers build more secure and enterprise-ready integrations.