Mashups and modularity: Towards secure and reusable web applications

The software industry is currently experiencing a paradigm shift towards Web-based software. We argue that Web technologies should evolve in a direction that would allow the developers to easily create ldquomashwarerdquo - mashup software that leverages components and other content from all over the world. In order to accomplish this, improvements are needed especially in two areas: security and modularity. In this paper we summarize our vision for the future of Web applications, focusing especially on these two important areas.