Hello!
Our customer want a highly customizable and personalizable first page on their SharePoint based intranet, and because of the high number of users (more than 25.000) we opted for a custom service application to handle the configuration of each user's front page. The front page will make heavy use of javascript and ajax, and my question is: Is it possible to talk to this service directly from jQuery, or do I have to make some sort of intermediate layer, like a web part that talks to the service?
One of my concerns are related to the claims based authentication that SharePoint 2013 now requires, how do I set that up in the jQuery.ajax call?