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An enterprise plans to migrate an on-premises legacy accounting application to Azure. The application relies on custom operating system components, specific kernel configurations, and requires full administrative (root/administrator) control over the OS and its compute sizing.
Which cloud service model and compute option best fulfills these requirements?
Azure Virtual Machines (VMs) represent an Infrastructure-as-a-Service (IaaS) offering that delivers on-demand, scalable computing resources. VMs virtualize physical server hardware—including central processing units (CPUs), memory (RAM), and storage disks—allowing users to run entire guest operating systems in the cloud without purchasing or maintaining physical datacenter hardware.
Compared to PaaS and serverless compute types, Azure Virtual Machines offer the highest level of flexibility and isolation. Because the organization requires deep OS-level modifications and legacy application compatibility, IaaS through Azure VMs is the only compute category that delivers total control over the software stack.
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