New Post: what's under the hood?

if MVC is used, dos the normal asp.net mvc pipeline events all get fired??
Can I use Controller and Action attributes?

If you use the MVC Player for Composite C1 to host ASP.NET MVC on your page, then yes, your routes, controller and action attributes are observed just fine. See http://www.composite.net/Add-on-Market/Packages/Composite.AspNet.MvcPlayer and http://docs.composite.net/Functions/MVC

I see, so theoretically, I can just drop my app into an 'Areas' folder in the c1 site, wireup the
route and it would work? I'm talking a simple app - i.e. - hello world in an area...

Hosting MVS next to Composite C1 should also work just fine. AFAIK we are not preventing you from using MVC (or anything else ASP.NET for that matter) net to our app.

Have you tried and encountered any problems?