Azure is a cloud computing service for building, testing, deploying, and managing applications and services through Microsoft-managed data centers.
Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
Open Graph is a protocol that is used to integrate any web page into the social graph.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.