Virtualization Changes Application Deployment But Not Development

Virtualization Changes Application Deployment But Not Development: "Virtual machines virtualize the operating system; a complete environment. They do not virtualize an application, nor even an application server environment. Indeed, one could successfully argue that web application servers have long virtualized applications through the automated provisioning and management of isolated, virtual instances of applications. At lease enterprise-class web application servers have, the story is very different when you look at scripting-based languages like ASP, PHP, and Ruby and their deployment on web-servers where isolation is not provided for nor considered."