Engineering Web application involves many challenges because of the intrinsic nature of their distribution, orientation content, and the need to make them available to a broad spectrum of users who are not known in advance. They stressed the importance of models in the development of Web applications, and they compare well-known process of Web-specific development such as WebML, WSDM and OOHDM to traditional software development approaches such as the waterfall model and spiral model. important problem area that is attached to the Web, such as localization, personalization, accessibility, and usage analysis, dealt with in detail, and the last chapter provides a good description and view of the Semantic Web and Web 2.0 the latest developments.