A web developer needs to test the compatibility of web functions across multiple different browsers and versions of those browsers. The web developer only has one machine and cannot install multiple b

Purchasing more machines would resolve the issue but is a costly and inefficient solution compared to software-based virtualization methods.

Application virtualization allows multiple versions of the same application (like different browsers) to run in isolated environments on a single operating system without conflicts. This is an efficient way to test compatibility across various browser versions without needing multiple physical or virtual machines for each combination.

Testing using a virtual desktop (which implies Virtual Machine-based desktop environments) would require creating and maintaining multiple full operating system instances, which is more resource-intensive and less efficient than application virtualization for just running different browser versions.

Setting up a multiboot configuration would involve installing multiple operating systems on the same machine, requiring reboots to switch between them and not allowing simultaneous testing, making it impractical for this scenario.