I need to rewrite a technical report. In order to select right candidate Rewrite the following paragraph on your own and add to the proposal
Pearson developers used physical and virtual machines, specifying avors and versions of the operating system, web server, database, SuccessMaker and other needed applications. Whether they sent a request via e-mail to the Operations team or built the test environment themselves, it still took a day or two to gain access to a test machine. Besides the long delay, there was no guarantee that the test instance would match the production environment that lives customers were using. Pearson looked to the cloud for speedier, more reliable alternatives.