This lecture discusses the importance of developing a business plan for technology-based ventures, emphasizing the need for a business plan to evolve over time. It also explores the significance of incorporating positive social impact alongside commercial success, introducing the concept of an impact framework plan and the Theory of Change as tools to ensure social benefit. The lecture provides a detailed explanation of the five stages of constructing an impact framework, from defining inputs to establishing impact drivers, using a simplified example of reducing teenage obesity in a village through football activities.