The product flow diagram (PFD) is a representation of the order by which a sequence of products is created according to product-based planning principles.
It is related to the product breakdown structure (PBS).
The product flow diagram is a prescribed activity of the PRINCE2 project management methodology which mandates the use of product-based planning.
[1] Some important features of the product flow diagram (PFD) include: The product flow diagram is typically created iteratively with product descriptions and the product breakdown structure because as a project manager works through the logic they will identify missing products and additional information about products.