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If the Resource workflow requires multiple VMs, the MSO repeats the process, requesting each Infrastructure Controller to spin up one or more VMs and load the appropriate VFs.
<<TODO: An Infrastructure Controller also has its own workflow, which specifies...?>>
<<TODO: To create an Infrastructure Resource controller, see ?>>
Network Controllers
A Network Controller instantiates a Virtual Network Function, by carrying out its network configuration workflow and reporting the resulting status (to both AAI and MSO).
Examples of Network Controllers include Transport Virtual Network Functions (VNFs), infrastructure networking (e.g. leaf, spine, and virtual switches), and Wide-Area-Networks (WANs).
To create <<TODO: point to a Network controller, see VNF Onboarding.Controller example, or information on how to create one>>
Application Controllers
The MSO requests Application Controllers to obtain the application-specific component of the Service workflow from SDC and to execute the orchestration workflow. The MSO continues to be responsible for ensuring that the Application Controller successfully completes its Resource configuration as defined by the workflow.
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