Explain what the technology does - in terms of the problem(s) that it solves. Focus on the critical aspect(s). Give Patent Partner the "big picture." Why would your Mom and Dad be proud of your creation as a solution to someone's technical problem? When a patent application is filed, this explanation will be a part of the Summary of Invention section.
MPEP 608.01(d) - Brief Summary of the Invention
Law - Purpose of the Invention