Abstract: How to make full use of Web services and construct application by composing existing services on demand in the dynamic and open environment is a challenge issue. I}his paper presented an approach to larger-granularity service composition for business-users, which encapsulated domain knowledge into prefabricated and modifiable templates. By this approach, business-users can construct applications just like assembling hardware by composing reusable and larger-granularity modules, which facilitates automated service composition and enhances abstract level to some extent.

Key words: Services composition, Composition template, Knowledge reuse