--------------
    | Network      |
    | Slice        |
    | Orchestrator |
     --------------
      | IETF Network Slice
      | Service Request
      |                    Customer view
  ....|................................
     -v----------------    Coordinator view
    |Coordinator       |
    |                  |
     ------------------
      |             |_________________
      |                               |
      |                               |
  ....|.......................    ....|.....................
     -v--------------                -v--------------
    |Controller1     | Operator1    |Controller2     | Operator2
    |  ------------  |              |  ------------  |
    | | IETF       | |              | | IETF       | |
    | | Network    | |              | | Network    | |
    | | Slice      | |              | | Slice      | |
    | | Controller | |              | | Controller | |
    | | (NSC)      | |              | | (NSC)      | |
    |  ------------  |              |  ------------  |
....|  | Network     |............  |  | Network     |............
    |  | Config      | Underlay1    |  | Config      | Underlay2
    |  v             |              |  v             |
    |  ------------  |              |  ------------  |
    | | Network    | |              | | Network    | |
    | | Controller | |              | | Controller | |
    | | (NC)       | |              | | (NC)       | |
    |  ------------  |              |  ------------  |
     ----------------                ----------------
      | Device Configuration
      v