Abstract. OASIS is an Integrated Project with the aim to revolutionise the interoperability, quality, breadth and usability of services for all daily activities of the elderly, by developing and deploying innovative technological challenges, consisting of a new, open architecture and a hyper-ontological framework. A wide range of applications are integrated in the areas of independent living, socialization, autonomous mobility and smart workplaces. User friendliness and acceptability of OASIS services are a top priority of the project, ensured with a user-centered design approach and the development of interactive services.