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

Cooperative Information System

    (CIS) Networked computers which support
   individual or collaborative human work, and manage access to
   information and computing services.  Computation is done
   concurrently over the network by cooperative database
   systems, expert systems, multi-agent planning systems, and
   other software application systems ranging from the
   conventional to the advanced.

   (1995-05-11)