Using vCenter Orchestrator to deploy VMs

Hello,

I'm working in a lab environment trying to automate the creation of VMs.  I am new to Orchestrator, but have been able to create a workflow that creates a VM and adds it to my AD Domain using the Active Directory plug-in.  What I'm looking to find out is if it's possible to use Orchestrator to automate adding an Operating System and what the best way to do that is.

I realize I could rely on VM cloning or a template, but I'm hoping to be able to select the desired OS as part of the workflow rather than cloning from a VM that has an OS on it already.  Is this possible with Orchestrator or do I need to use vCAC or another tool?

Thanks in advance