+---------------+
                         |   Customer    |
                         +-------+-------+
                                 |
         Customer Service Models |
                                 |
                         +-------+---------+
                         |    Service      |
                         |  Orchestrator   |
                         +------+-+--------+
                                | |
         Network Service Models | | Network and VPN Service PM Models
                                | |
                         +------+-+--------+
                         |     Network     |
                         |   Controller    |
                         +-------+---------+
                                 |
         +-----------------------+------------------------+
                               Network