Architecting a vCloud Availability for vCloud Director Solution : vRealize Orchestrator Configuration : 7.3 Provider Deployment
   
7.3 Provider Deployment
The provider deploys vRealize Orchestrator in its own management infrastructure in a highly available and scalable configuration. vRealize Orchestrator is then used for tenant on-boarding activities (with vCloud Director plug-in) as well as for managed DR services for multiple tenants.
The provider vRealize Orchestrator does not have access to the tenant’s on-premises vCenter Server nodes. Therefore, it can be used only for real and test recovery to the cloud.
Summary:
Provider managed use case
Scalable multi-tenant vRealize Orchestrator usage
No connectivity to tenant on-premises vCenter Servers (uses Register Standalone Org configuration workflow)
Used only for recovery to the cloud.
The vSphere Replication plug-in currently supports only tenant-level credentials. Therefore, the provider must have an Organization Administrator account for each managed organization and configure separate endpoints within vRealize Orchestrator.