Distributed information systems are becoming more popular as a result of improvements in computer hardware and software, and there is a commensurate rise in the use of the associated technologies. Why distributed computing so popular With the increasing desire for business-to-business (B2B) communication and integration, technologies such as Service-Oriented Computing (SOC), Semantic Web, Grid, Agents/Multi-agents, peer-to-peer, etc., are receiving a high level of interest nowadays. Due to the revolution in the internet, implementation of SOC B2B integration (e.g. e-commerce, e-government, and e-healthcare) is popular Where lacking Building Web Services comprehensively needs further improvement, for instance, Quality of Service (QoS). Detection of service availability to achieve self-healing in the invocation process Service reuse, how best to define atomic services Service composition Future computing Meanwhile, it should be noted that Web Services play only a parti...