Web hooks?

I'm not sure what to search for or how to phrase this particular question, so please bear with me.

We are creating several modules with Articulate that we will turn over to an outside web development team. That web team is working to develop a "YouTube style" website where when one module is completed, the website can serve up related modules. We all agree that this is a great idea, however, the web development team is asking a few questions about Articulate that I'm not sure how to answer.

(1) When an Articulate Storyline 2 Module completes, does Articulate output any data, variable, etc. that can tell the web browser that the module is complete? The web development team needs something from the module to trigger the launch of the related video.

Is this possible? Does Articulate Storyline 2 do this natively, or is there something I could possibly build into the module with JavaScript to achieve this?

(2) Am I able to use relative links (/my-directory/my-file.html instead of http://mysite.com/my-directory/my-file.html) in a module?  Has anyone had any success with this?

Thanks in advance?