Hi, your question needs more details. Anyway you don't need any special customization in Seam web application, look at AS 5 guidance is in Chapter 8. HTTP Services
Your application must be enabled for clustering to be able to run it over different platforms.
The documentation provides the guideline to prepare your application (see chapter 35).
An Apache cluster configuration is not really different from a basic configuration as long as you take in account the sticky session config parameter and accesibility of the different servers over the network (firewall!)
Thanks, it worked