1. A method comprising: receiving a request to perform a processing operation; identifying a first task associated with the processing operation; identifying a second task associated with the processing operation; invoking, using one or more processors, a first virtual machine to perform the first task, wherein the first virtual machine executes an instance of a browser application to perform the first task; and invoking, using the one or more processors, a second virtual machine to perform the second task, wherein the second virtual machine executes another instance of the browser application to perform the second task.