A common extension requested for vCloud Automation Center is the ability to pre-create computer account objects in Active Directory in a specific Organizational Unit, and also to decommission the accounts in different ways along with the virtual machine. Without a custom workflow, you can have the computer join the domain during the customization phase, but this will only create the computer account in the default Computers container. Also, while there is an out-of-the box AD machine cleanup plugin which can be enabled, it will likely never support the multi-tenancy introduced in vCAC 6.0. vCO does not support it today either, but it is more likely to gain support in the near future.
This solution implements these functions using vCenter Orchestrator and its plugins for vCAC and Active Directory.
The rest of this article contains instructions on installing and configuring the vCAC AD Computer Account Management Extension. This extension allows administrators to model very specific OU structures for their AD machine accounts using vCAC custom properties, and supports dynamic OU Distinguished Name building based on combinations of properties derived from different areas of vCAC (compute resources, reservations, groups, blueprints, etc.).