This is the fourth and final course in the Computational Thinking with JavaScript specialisation. It is an added-value unit and entirely builds on what you will have learned in the first three units and enables you to synthesise and develop that knowledge. The course supports you to develop your own larger application, using a combination of the technologies you have seen already, including HTML, JavaScript and various libraries, while also encouraging you to reach out to incorporate new libraries. You are taken through the software development process step-by-step, with guidance along the way. You have plenty of opportunity to interact with your peers on the course, and to review their work at periodic intervals.