Combination of privateand AWS servers - possible?

Hello everyone!
We are in the process of deploying a new multi-tenant private cloud platform. At the same time, we have a customer that needs a combination of our private servers (prod systems) and AWS (Dev/Test and DR). So far, we could not find a suitable software solution that would help us move/migrate systems in manageable batches. What options can be of use to us?
Thanks in advance.