Abstract: In the process of developing network software systems, the issues of Distributed processing, application coordination and integration are always very hard to cope with. A model of network software based on Web-Services technical framework is proposed. It defines a Software Development Model for Local System (LS-SDM), which can support protocols and specifications of Web Services. A Software Development Model for Network System is constructed by associating LS-SDMs with protocols and specifications of Web Services. The existing techniques of Web-Services can be used to cope with the issues of distributed processing, applications coordination and integration.

Key words: Web Services, Network Software, Software Development