Web information systems are nowadays widely used. E-business, edutainment, infotainment, community and identity Web systems are data and information intensive. They integrate a variety of database, workflow and other processing, communication and presentation systems. Their design and development is thus based on an integrated development of structuring, functionality, distribution and interactivity of users. The codesign framework allows the integration of these different aspects. This chapter surveys the codesign approach and its deployment for the development of large Web information systems.