  Middleware technologies is a very big field, containing a strong already done
research as well as the currently running research to confirm already done
research's results and the to have some new solution by theoretical as well as
the experimental (practical) way. This document has been produced by Zeeshan
Ahmed (Student: Connectivity Software Technologies Blekinge Institute of
Technologies). This describes the research already done in the field of
middleware technologies including Web Services, Grid Computing, Grid Services
and Open Grid Service Infrastructure & Architecture. This document concludes
with the overview of Web (Grid) Service, Chain of Web (Grid) Services and the
necessary security issue.
