A process flow diagram is a graphical representation of the steps involved in a process. It is often used in business to document and communicate business processes, as well as to assess the efficiency of a process. A process flow diagram can be very helpful in product development, as it can provide a clear and concise visual representation of the steps involved in creating a product. This can be extremely helpful in identifying bottlenecks or areas where improvements can be made. In addition, a process flow diagram can help to communicate the product development process to stakeholders, providing them with a clear understanding of what is involved. As such, it can be an invaluable tool in ensuring that all stakeholders are on the same page.