Can Agent 365–registered 3rd-party agents be invoked outside MS 365 clients and still track usage?

Hello,

The documentation describes how to register a third-party agent with the Microsoft Agent 365 platform (for example an agent hosted on Google Cloud Run) in order to benefit from capabilities such as observability, governance, security, and centralized management.

Does this mean that users must access these agents through Microsoft 365 entry points (such as Copilot Chat, Teams, or other Microsoft clients) in order for those capabilities to apply?

Or can the same registered agent also be invoked and interacted with from third-party clients or external services (for example applications running in GCP) while still benefiting from Agent 365 features like observability, governance and/or security?

What if third party agent is registered to Agent 365, but it doesn't use EntraID? It's what observability, governance and/or security will be available then? 

Thank you.