Redhat Fuse and PAM usecases

I am starting to build a new application on microservices/API-driven architecture. I do have some requirements for business process management (Human approval activity) and straight-through processing.

Can I use Redhat PAM alone for BPM as well as a microservices orchestration use case or is it recommended to use Fuse with it? I am confused with the usage of Fuse. What are the common use cases of Fuse and PAM?

Is Red Hat PAM can also do microservices orchestration. Do you think it is a viable solution choice for this use-case? Please guide.

Regards Vinay