[keycloak-user] Client vs resource

I'm planning to use keyclok to secure our product and i have doubts around defining clients and resoureces, Our product consists of 4 major components, lets say A,B,C,D and each components has a set of APIs. Component A intracts with B and C. Component B interacts with C. There can be multiple instances of C connected to B and there can be multiple instances of D connected to C. The users in an organization can have various roles like admin or read-only user on each component. User, who is an admin for componet A can be a read-only user in component B and same applies for various instances of C. Now i'm stuck at whether to create multiple clients, one per component or create one client and make each of this component a resource. Your thoughts? Daya