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Figure 1 shows the two major domains that use orchestration: service orchestration, which is embodied in MSO and service control, which is embodied in the controllers (Infrastructure, Application and Network Controllers). Although the objectives and scope of the domains vary, they both follow a consistent model for the definition and execution of orchestration activities.
Figure 1. Orchestration
Depending on the scope of a network issue, MSO may delegate, or a controller may assume, some of the activities identified in Figure 1. For new services, this may involve determination of service placement and identification of existing controllers that meet the Service Request parameters and have the required capacity. If existing controllers (Infrastructure, Network or Application) do not exist or do not have capacity, MSO will obtain a recipe for instantiation of a new controller under which the requested service can be placed.
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