I see some description about WEM MCM (Marketing Campaign Management) that says something below.
Are those functions delivered by WEM? or does it need to be integrated other product/service like Omniture Test&Target?
I want to be very clear which functions are from pure WEM.
Also what is ClicksteramCloud?
To understand the WEM/CQ5 MCM feature, you can watch the following screencast:
CQ5 provides the features that you have listed, which are already quite powerful, but Omniture Test&Target brings testing to the next level:
The Clickstream Cloud, also called Context Cloud is the user information stored on the client-side (in the browser), such as the stream of pages the user clicked-through (in the form of aggregated tags from each visited page), as well as many other user-context information (such as the screen resolution, the navigator info, IP address, etc.). If the user is logged-in it also contains the user profile information.
Btw, just found these two articles on the Clickstream Cloud: