Microsoft Azure Stack can only be ordered with the corresponding hardware, which has been tested and certified. The following are the hardware vendors:

• HPE
• DELL EMC
• Lenovo
• Cisco
• Huawei
• Wortmann
• Fujitsu

The typical scenarios which Azure Stack could fit in are:

• Disconnected/Edge scenarios (for example, running services of Azure on a ship or a plane)
• Data privacy reasons (data could, should, or must not leave the company location)
• Modern cloud app development on-premise

As Azure Stack can only be bought as an integrated system, there is no software available that could be downloaded and place it on dedicated hardware. But for testing proof of concept (PoC) purposes, Microsoft offers a trial version of Azure Stack, called ASDK. As it is running on one physical host, no performance or availability tests are suitable, but in general all features are available with ASDK, too.

The required hardware for an ASDK is documented here at https://docs.microsoft.com/en-us/azure/azure-stack/asdk/asdk-deploy-considerations. To finally double check if all hardware requirements are met, you can run the pre-requisite script from here at https://go.microsoft.com/fwlink/?LinkId=828735&clcid=0x409.