The Free On-line Dictionary of Computing (30 December 2018):

Computer Aided Software Engineering

    (CASE, or "- assisted -") A technique for using
   computers to help with one or more phases of the software
   life-cycle, including the systematic analysis, design,
   implementation and maintenance of software.  Adopting the CASE
   approach to building and maintaining systems involves software
   tools and training for the developers who will use them.

   (1996-05-10)