Does the SAP Web Application Server replace the SAP Internet Transaction Server (SAP ITS)?
No, the SAP Internet Transaction Server (SAP ITS) will continue to be supported in the future and is integrated into Web Application Server from version 6.40 on. This is because the SAP ITS will in future display Dynpro-based SAP applications to the Web, either using the HTML-GUI or with HTML-template based IACs. This integration reduces the additional hardware for an external ITS. All SAP ITS based applications and the administration will work as before. Flow Logic technology will also not be supported by the SAP Web Application Server. ITS Flow Logic is an approach to Web application development that is now completely covered by the new “Business Server Pages” technology and others. New applications based on ITS Flow Logic are no longer developed by SAP. Existing applications based on ITS Flow Logic will continue to be supported. SAP recommends customers use the Business Server Pages for new projects or projects in an early stage of development instead of ITS Flow Logic.