Coshopping server topologies
Communications Enabled Applications (CEA) is usually installed on a separate server. If you are installing CEA for WebSphere Commerce Express, install CEA on your WebSphere Commerce Server.
The CEA and coshopping widgets continually poll for events
between the two shoppers. To prevent excessive traffic on the WebSphere Commerce Server, install CEA
on a separate server as shown in the following image:
WebSphere Commerce Express does not support a clustered environment. The
following image shows the supported topology for WebSphere Commerce Express with coshopping: