Home > Workload Solutions > SQL Server > Guides > Reference Architecture Guide—Implementing SQL Server 2022 on Dell Integrated System for Azure Stack HCI > Azure Stack HCI operating system
Every Azure Stack HCI solution from Microsoft is powered by the Azure Stack HCI operating system. Customers can purchase the DIS with the Azure Stack HCI operating system pre-installed directly from Dell Technologies or buy validated AX7525 nodes and install the operating system themselves.
The Azure Stack HCI is especially low footprint, highly secure, and an integral part of Microsoft’s ecosystem with regular updates from Microsoft, tightly knit and integrated into the ecosystem.