This lecture discusses the challenges and strategies involved in the development of smart cities, focusing on the comparison between Lausanne and Pully. Topics include the definition of a smart city, digital transformation, internal and external interactions, and the importance of practical and useful work at the municipal level. The lecture also covers the metamorphosis project, the dematerialization process, and the need for collaboration and project definition. It emphasizes the significance of intelligent management, flow, and the development of eco-districts.