This chapter introduces a framework intended for facilitating the implementation of Web-based Adaptive Hypermedia Systems. The framework is orthogonal to Web “serving” approaches, and poses only minimal requirements in that direction. As such, it can be easily integrated into existing, non-adaptive Web-publishing solutions. This chapter presents in detail several aspects of the framework, and provides an overview of its application in the European Commission funded IST-1999-20656 PALIO project (“Personalised Access to Local Information and Services for Tourists”). Furthermore, it discusses some of the lessons learnt from our work on the framework thus far, as well as what we consider the most likely directions of future work in the area.