Hi VMware community

I am an engineer for a Software company, and one of our customers is building up some VMs using your VMware Horizon 8.0 product. The customer intends to create a pool of workstations to be able to run our software, but there are some possible compatibility issues. Our software client requires a critical (and proprietary) process to be able to run, and the key here is that only one instance of that process can be present on the Operating System if our software is to work correctly.

I have three questions:

1. In creating a pool of workstations, does that pool run on a single Operating System?

2. My customer said that the workstations are pulled off of the Horizon Datastore. What is the Horizon Datastore?

3. Is the Horizon Datastore comprised of a single Operating System?

Thanks in advance for your help!