Need to evaluate a Microsoft product? How can I do this without spending money?
Microsoft has a evaluation center that you can go to and download almost all of their software for anywhere from 15-180 days depending on the product. microsoft.com/en-us/evalcenter
This is especially good if you are building a server system or even a complicated workstation system and want to make sure the concept will work for you. Some of Microsoft's server licenses can run in the $4-5,000 range and you do not want to spend that kind of money without confirming the concept will work.
Another approach is to try Microsoft Azure. This is cloud service that allows you to build your system in the cloud so you don't have the hardware investment as well as the software. There is a free trial option for Azure so for little or no ivestment other than time you can test your new system.
Google and Amazon have similar products to do this. Cloud.Google.com and AWS.amazon.com, Azure.microsoft.com are three links you can check out these services.