General Overview: Windows Server 2019 was released in Oct 2018 with several (less obvious but important) updates to its virtualization and cloud capabilities. Windows Server 2019 provides major improvements for Hyper-V, Storage Spaces Direct and Network Controller. These features are the fundation of Azure Stack, the Microsoft private cloud offer. Windows Server 2016 comes in 3 editions, Datacenter, Standard, Essential but only Datacenter and Standard enable virtualization capabilities (we will therefore not list the other editions). There is also the free Hyper-V Server edition. Datacenter and Standard provide the equivalent set of capabilities and differ only in their virtualization rights i.e. how many Operating System Environments (OSEs = licensed guests) are included. Datacenter is aimed at: Highly virtualized private and hybrid cloud environments.As in Windows Server 2016, Windows Server 2019 offers Full Server and Server Core installation options. The minimal nature of Server Core creates limitations: There is no Windows shell and very limited GUI functionality. The Server Core interface is a command prompt with PowerShell support. The matrix will focus on the capabilities of the Full Server installation, pointing out limitations where appropriate.
Windows Server 2019 provides a minimalist deployment model called Nano Server. Nano Server doesnt provide Shell, or 32bit legacy support. Moreover Nano Server supports only Cloud Native Application such as Kubernetes or Docker. For further details, please visit this topic: https://technet.microsoft.com/en-us/windows-server-docs/get-started/getting-started-with-nano-server
Just before the release of Windows Server 2019, Microsoft delivered Windows Admin Center which is a web-based tool to manage your Windows Server infrastructure. It provides tools to manage hyperconverged infrastructure, Windows Server (event log, firewall etc.) and it supports third party extension to add features. It can be a replacement of MMC.
Microsoft created a new offer called Azure Stack HCI which basically Windows Server 2019 hyperconverged infrastructure managed by Windows Admin Center.