I have some some-questions about Cloud Portal. Thanks to @Vitaly Vainer for answers. We came to a different point when we are talking about Cloud Apps. I have an idea about applications on Cloud Portal. Customers should be able to select public applications from developers/partners or other customers which they published. Of course if application is public. May be SAP open a store for applications. Nowadays nearly every platform has an application store.
I think SCN discuss about it. Any ideas/comments are welcome!