"Worth buying Windows Server 2016 Essentials, ideal for small businesses running low production workloads as this edition can serve only up to 25 users and 50 devices. It can be deployed as a first server (for inexperienced users) or a primary server (for building a multi-server environment to be used by SMBs). Delivers a set of advanced features and capabilities to small businesses for a reasonable price, allowing them to achieve more productivity and efficiency.No CAL is required.