Enterprise Cloud Subscriber (ECS): An ECS represents a middle tier of aggregation for related identity records. In one of our sample enterprise SaaS scenarios, the ECS is "Example.com" that subscribes to a cloud-based CRM service "SaaS-CRM Inc." (the CSP) for all of its sales staff. The actual Cloud Service Users (CSUs) are the FooBar Inc. sales staff. The ECS Actor is identified to help capture use cases in which a single entity is given administrative responsibility for other identity accounts. SCIM may not address the configuration and setup of an ECS within the CSP, but it does address use cases in which SCIM identity resources are grouped together and administered as part of some broader agreement or operational exchange.