The PeopleSoft Internet Architecture uses a web application server and anHTTP server. People Tools 8.12 and above include both BEA WebLogic andApache with Jserv. With PeopleTools 8.4, both BEA WebLogic and IBMWebSphere are bundled. Apache with Jserv is no longer a supported webapplication server combination. Customers can choose which web applicationserver to run during installation time.In a mixed PeopleTools 8.1x and 8.4 environment, each PeopleTools installationshould have their own chain of web application server and application server,PeopleSoft Proprietary and Confidential Page 5and these can be on the same machine. For example, a PeopleTools 8.1xinstallation using Apache and Jserv could reside on the same machine as aPeopleTools 8.4 installation using IBM WebSphere. Care should be taken toensure that unique port numbers are assigned to each server chain.