Microsoft Windows Server 2016 Essentials

Licensing info: CPU/Core Limit: This license is valid for one installation on one physical server (no limits for CPU or Cores).
Download – Product key and installation instructions are emailed after purchase.
Windows Server Essentials offers a flexible, affordable, and easy-to-use server solution for small businesses with up to 25 users and 50 devices. An ideal first server, Windows Server Essentials can also be used as the primary server in a multi-server environment for small businesses. Windows Server 2016 Essentials provides a wide range of new and enhanced features and capabilities for Windows Server Essentials, allowing small businesses to be more productive.
Download the Windows Server 2016 licensing datasheet