+------------------+
............... |                  |
 Service level  |                  |
                V                  |
  E2E          E2E                E2E                    E2E
Service --> Service --------->  Service  ------------>  Service
Exposure    Creation     ^    Optimization   ^          Diagnosis
           /Modification |                   |              |
              ^ |        |Diff               |              |
    E2E       | |        |         E2E       |              |
  Service ----+ |        |        Service    |              |
 Decommission   |        +------ Assurance --+              |
                |                     ^                     |
 Multi-layer    |                     |                     |
 Multi-domain   |                     |                     |
 Service Mapping|                     |                     |
............... |<-----------------+  |                     |
 Network level  |                  |  +-------+             v
                V                  |          |         Specific
            Specific           Specific       |          Service
            Service  -------->  Service <--+  |         Diagnosis
            Creation     ^    Optimization |  |             |
          /Modification  |                 |  |             |
                |        |Diff             |  |             |
                |        |      Specific --+  |             |
       Service  |        |       Service      |             |
  Decomposition |        +----- Assurance ----+             |
                |                  ^                        |
............... |                  |  Aggregation           |
 Device level   |                  +------------+           |
                V                               |           |
Service      Intent                             |           v
Fulfillment  Config  ----> Config  ----> Performance ----> Fault
             Provision     Validation    Monitoring        Diagnostic