The Cloudify Widget is a server that allows to a Cloudify "recipe player" in other website, and allow visitors to launch a certain recipe with a single click. It uses HPCloud to provision VMs and host the installed recipes everytime a user launches a recipe using the widget. Provisioning of the VMs and the interaction with the cloud APIs is done via the jclouds library.
For more information on how to create a widget and embed it in your web pages, and how to setup the widget server, please refer to the project's wiki.