Managing Software Center and Application Catalog
In CM12, if you plan to target software to users, you will use the Application Catalog, or If you plan to target software to devices (computers, mobile devices, and so on), you will use Software Center. Also Software Center was used to schedule software installations, configure remote control, power management settings. Users could connect to the Application Catalog to browse for and request software.
In CM, a new version of Software Center is now available that allows you to browse for applications without having to use the Application Catalog. However, the Application Catalog website point and Application Catalog web service point site system roles are still required for user-available apps to appear in the new Software Center.
Now, you have two options:
The old Software Center and the Application Catalog - this is the default option. Users use the CM12 like client UI.
The new Software Center - you have to enable it. User-available apps now...