This work describes the design and development process of the LISA website, with a focus on the methodologies adopted, the guidelines followed to ensure accessibility, and the results that emerged in the course of the work. The aim is to show how a user-centred design approach can contribute to the realization of effective digital tools, concretely supporting the promotion of active ageing in the clinical, social, and technological fields. The site provides educational content, operational instructions, materials for performing physical exercises, and serves as an information channel to promote the culture of active ageing.