Microsoft offers an Evaluation version of Windows Server 2016 specifically for testing and demonstration purposes. It is a full-featured version of the software that expires after 180 days. 180-day trial period. Features: Access to Datacenter and Standard editions. Purpose: Lab testing, app development, and learning.
One of the best features: you can (total 3 years – 180 days x 6 resets). windows server 2016 eval