Windows Server 2019 Data Center is the latest version of the server operating system that bridges on-premises environments with Azure services enabling hybrid scenarios maximizing existing investments.

Here is the reason why buying Windows Server 2019 is your suitable choice:

Increase security and reduce business risk with multiple layers of protection built into the operating system.

Evolve your data center infrastructure to achieve greater efficiency and scale with Hyper-converged Infrastructure.

Windows Server 2019 also enables you to create cloud-native and modernize traditional apps using containers and micro-services. For more details, check out the Windows Server Website.

How to download Windows Server 2019:
Please go to this link
https://www.microsoft.com/en-us/evalcenter/evaluate-windows-server-2019?filetype=ISO