How many devices are needed to set up AD Rating?

You will need one Virtual Machine per Active Domain.

For AD Rating to work, you need a specific agent for each AD domain to be analyzed.

For example, if you have 25 AD domains to analyze, you can : 

- Have one machine with 25 virtual machines (VMs) belonging to 25 different domains.

- Install an agent on each VM, with a dedicated API key for each agent. So you'll have one machine, 25 VMs, 25 agents and 25 API keys.