Heroku is a cloud platform as a service supporting several programming languages. It provides the tools to iterate quickly, and adopt the right technologies for a project. It lets the user build modern, maintainable apps and instantly extend them with functionality from hundreds of cloud services providers without worrying about infrastructure.
The Jigsaw software provides the Consortium's Java-based Web server. With a modular architecture and full HTTP/1.1 compliance, the Jigsaw server is a premier experimental platform for W3C and the Internet community. The server uses an object-oriented approach when it comes to the storage of files and the processing of incoming requests, making it both more efficient and easily extensible.