@startuml
!define PUML https://raw.githubusercontent.com/hoggmania/plantuml-stdlib/master
!include PUML/puml-themes.iuml /' Contains styling '/
!include PUML/puml-methods.iuml /' Contains sequence diagram macros '/

/'Local Styling additions or overrides'/
skinparam node {
    backgroundColor<<Client>> LightSlateGrey
}
skinparam component {
    backgroundColor<<Client>> Coral
}

/'Define Actors'/
Actor ActorIT as "IT"
Actor ActorStaff as "Staff"

/'Runtime'/
Node Runtime <<Client>>{

    Node RuntimeKeyCloak <<IAM>> as "KeyCloak" {
        component RuntimeAdminRealm <<Client>>
        component RuntimeStaffRealms <<Client>>
        RuntimeAdminRealm --> RuntimeStaffRealms: manage
        RuntimeAdminRealm ..> RuntimeStaffRealms: provision\nstaff
    }

    Node Applications <<Runtime>> {
        component Backend <<Client>>
        component UserAdmin <<Client>> {
            UserAdmin .> RuntimeStaffRealms: provision\n<<SCIM>>
        }
        RuntimeStaffRealms --> Applications: SSO manage
    }

    ActorStaff -> RuntimeStaffRealms: authenticates
    ActorStaff -> Applications: SSO & Manage

    ActorIT -> RuntimeAdminRealm: Authenticates & manages
}

@enduml