Source : Free On-Line Dictionary of Computing

Large Installation Systems Administration
     
        (LISA) The {USENIX} systems administration conference.  It is
        now more general that its title suggests.  It is sponsored and
        organised by {SAGE}, the USENIX Systems Administrators Guild.
     
        {(ftp://ftp.sage.usenix.org/pub/sage/)}.
     
        (1996-01-02)