Creating virtual machine templates
The time spent to create a virtual machine is quite small, but the problem is that it doesn't have an operating system on it. Also, it is time consuming if you have to install and prepare the operating system on every new virtual machine.
If you consider the time taken to install the operating system, the updates configuration, and all the other components of a server, it can take hours. But using templates, you will be able to create new virtual machines with the operating system ready to be used, in less than 5 minutes.
Enterprises will most likely consider System Center for managing their environment, and Virtual Machine Manager will handle this automatically. It will also combine several different profiles to give you a more flexible solution to mix and match templates, based on needs and specifications.
In case you don't have the System Center Virtual Machine Manager, you can use simpler templates on Hyper-V with a pre-configured operating system...