Introduction to the Proceedings of the EDOC 2007 Workshop Middleware for Web Services (MWS) 2007

This is an introduction to the proceedings of the MWS 2007 workshop held at EDOC 2007. It first explains the motivation for and background of the workshop. Then, it contains a short description of the keynote, each long and short peer-reviewed paper, and the discussion session "impact of various execution environments on middleware for web services". After the closing statements, MWS 2007 Program Committee members are listed.