This document discusses Atlassian Connect, a new add-on framework for Atlassian's OnDemand and OnPremise products. Atlassian Connect allows add-ons to be hosted externally on web servers through REST APIs and webhooks, whereas the traditional P2 framework executes add-ons on the same server and JVM. While Atlassian Connect enables add-ons for OnDemand products and uses any programming language, it also has drawbacks like missing features, added responsibility for support, and requiring extra hosting.