The papers in this volume aim at obtaining a common understanding of the
challenging research questions in web applications comprising web
information systems, web services, and web interoperability; obtaining a
common understanding of verification needs in web applications;
achieving a common understanding of the available rigorous approaches to
system development, and the cases in which they have succeeded;
identifying how rigorous software engineering methods can be exploited
to develop suitable web applications; and at developing a European-scale
research agenda combining theory, methods and tools that would lead to
suitable web applications with the potential to implement systems for
computation in the public domain.