The app layer capture process starts with a pre-scan of the reference machine, installing the applications, and a post-scan.
The pre-scan creates an image of the reference machine before the required applications are installed. See Start an App Layer Capture.
The application installation installs the required applications on the reference machine that was selected in the pre-scan. See Install Applications on the Reference Machine.
The post-scan creates an image of the reference machine after the required applications are installed. The system then detects all changes following the installation and starts the capture process. See Post-Scan and Layer Creation.