A financial firm needs to continue using a critical piece of accounting software that only runs on Windows 7. The firm has upgraded all its workstations to Windows 11, where the old software is incompatible. Which of the following solutions would allow the firm to use the legacy software on their new workstations with the least impact on the modern host OS?
Migrate the application to a Platform as a Service (PaaS) solution.
Run the application within a security sandbox on Windows 11.
Install the legacy software in a Windows 7 virtual machine.
Use Windows Compatibility Mode to run the software on Windows 11.
Creating a virtual machine (VM) that runs an older operating system, like Windows 7, is the most effective solution for this scenario. This method of application virtualization allows the legacy application to run in its native, supported environment, which is hosted on the new Windows 11 workstation. It isolates the legacy software, preventing compatibility issues with the host OS. While Windows Compatibility Mode might work for some simpler applications, it is not a guaranteed solution for complex software and can be unreliable. A sandbox is primarily used for security, to isolate and test untrusted applications, not for running production legacy software. Platform as a Service (PaaS) is a cloud computing model for developing and deploying new applications and is not relevant for running a local legacy application.
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