The project has a situation which can be described as: a portal application has to be built. This is expected to be home for many existing non portlet applications (some are Java EE based and some not).
Obviously, portal will provide SSO. Options of rendering a non portlet application to portal seem to be using either an iFrame or a URL redirect. In either case, it looks like the request has to pass through the portal server (??).
What are the challenges that this solution face? Best practices to get this implemented?