Thanks for your comment. I haven’t seen the definition described by PPI. I will study that for sure.
On BIM Corner Blog, we always try to share our knowledge and experience in a practical way – easily accessible for everyone. We avoid hard to understand definitions, primarily general descriptions. 

Thanks for your article on VDC. It is very clear and well written. However, there is one glaring mistake when it comes to your definition of Project Production Management. PPM is defined by the Project Production Institute as “The application of Operations Science theories, principles and methods to better understand, control and improve project delivery.”

See https://projectproduction.org/new-to-ppi/ for introduction to the massive body of knowledge supporting PPM. There is some overlap with Lean Construction but PPM is much more rigorous and practical in theory and application.