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