E-businesses are increasingly facing the need of porting the provision of their e-services to mobile customers. Evolving requirements, such as reliability, security, scalability, performance and privacy, from fixed to mobile settings, has revealed new and important challenges. This is due to the behavioural constraints that mobility poses, and that were not faced in traditional distributed settings. Examples include: dynamic network topology, changes in location, constrained resource availability, communication protocols heterogeneity, unstable connectivity, and so forth. Industrial practice is demonstrating that such transition is not straightforward and tends to be costly. In particular, the evolution may "break" the software system architecture, thus calling for substantial and expensive changes. Even when the system is (re)built from scratch, it is unclear if and how the state-ofthe-art in software architectures relate to the requirements and concerns brought forward by ...