Our current architecture is each client has an application but we are migrating to change that for the Saas environment. How will Visual Guard fit wit this?

Visual Guard .net supports various combinations:
1- one application in Saas mode with a database and a Visual Guard repository per client
2- one application in Saas mode with a database per client and a central repository for all the clients.
3- One application installed on each client with its own database and its one Visual Guard repository.