This document discusses ad hoc analysis, a new feature of Webtrends OnDemand that allows users to re-analyze data from their Webtrends OnPremises installation on demand. It allows email notification of completed analysis jobs and uses daily backups to re-analyze data. Short analysis runs are free while monthly runs require credits. The document provides examples of how ad hoc analysis can be useful for situations like dynamic content delivery, dealing with mistakes, and an analyst's daily work. It highlights benefits like triggering analysis on demand, quickly re-running analyses, and recovering from tagging errors.