AppLogic is a grid operating system which enables utility computing for running and scaling Web applications. Our hosting partners use AppLogic to offer utility computing services for transactional and streaming applications on grids of commodity servers in their datacenters. AppLogic is vendor-neutral. It uses advanced virtualization technologies to be completely compatible with existing operating systems, middleware, and Web applications. Billions of lines of tried and true infrastructure software, middleware, and application code can be used with AppLogic unaltered.