I'd like to understand the purpose of Application Catalog as opposed to Software Center. I have read thru the following post and am still confused as to the additional functionality the website provides over Software Center - http://blogs.technet.com/b/configmgrteam/archive/2012/03/31/introducing-the-application-catalog-and-software-center-in-system-center-2012-configuration-manager.aspx
Thanks.