Module 2 introduces the process for creating a financial business case for a product development project. This involves estimating future sales, costs and then based on the resulting cash flows, the project's financial viability using financial metrics such as NPV, IRR and the Payback Period.

Module 3 shows the steps to prepare a product development presentation proposal suitable for presentation to upper management or investors.

Module 4 introduces the concept of the Circular Economy, and how it differs from today's Linear Economy. The 3 Principles of the Circular Economy are described using examples of how they are applied. A more detailed view of the Circular Economy is presented using the Ellen MacArthur Foundation's Butterfly Diagram, highlighting the Technical and Biological Nutrient Cycles as foundational to circular product design.

Module 5 links product development to environmental and social sustainability. The module begins by providing an overview of the sustainability imperative, essentially arguing why we as product developers need to focus on more sustainable products and services. The concept of "The Anthropocene" is introduced, as a description of how human activities are now shaping the planet's natural processes. Sustainability is then defined in terms of environmental and social responsibility. The module concludes with an overview of sustainable products, beginning with a case study of a typical t-shirt.