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An enterprise is planning to migrate several legacy on-premises applications to Azure. The operations team requires full administrative access to configure the underlying operating systems, run custom background services, and manage OS-level patching directly using Azure Update Manager.
Which cloud service model should the enterprise select to fulfill these management requirements?
Infrastructure as a Service (IaaS) is a cloud computing service model where a cloud vendor provides users with access to fundamental computing resources such as virtual machines (VMs), storage, and networking over the internet. In an IaaS model, the cloud provider maintains the physical hardware, data center facilities, and virtualization layer, while the customer retains control and administrative management over the guest operating systems, middleware, runtime environments, and installed applications.
Compared to higher-level cloud abstractions, IaaS is the only model that gives the organization total ownership of the operating system and installed software stack. It provides the precise balance of cloud scalability while satisfying administrative and legacy compatibility constraints.
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