This embedded widget allows cross domain data exchange via UI.
It can be embedded into any 3rd party website by just appending a one line of code into your page.
The secure communication between your site and the remote server from a different domain is handled via iframe and window.postMessage() mechanism, as the main code for the app is hosted elsewhere.
This widget can be used for easy to integrate chat clients, product search boxes and in many other cases where your site can consume data from or pass to services without externalized APIs.
In this specific project, the widget is used to search auto parts from a web site and services on different domains.