ATG Adaptive Scenario Engine provides a set of components to the request-handling pipeline. Because the path taken by the request varies based on the type of request, this section is broken down into subsections for JSP and JHTML requests. The components included in each list may appear in the pipeline when the Adaptive Scenario Engine is running. Additional components may be added to the pipeline by other modules.
JHTML Request on ATG Adaptive Scenario Engine
The following components are available to the DAS servlet pipeline when it is handling a JHTML request on ATG Adaptive Scenario Engine. The order of the components in this list loosely represents the order they may appear in the pipeline:
Additional servlets may appear to your server as though they are part of the DAS servlet pipeline, but they are either disabled or ignored.
The diagram below shows a path that a JHTML request may take through the DAS servlet pipeline.
![](media/image5.png)
JSP Request on ATG Adaptive Scenario Engine
The following components are available to the DAF servlet pipeline when it is handling a JSP request on ATG Adaptive Scenario Engine. The order of the components in this list loosely represents the order they may appear in the pipeline:
The diagram below shows a path that a JSP request may take through the DAF servlet pipeline.
![](media/image6.png)