Consulting
Product managers use greenfield to describe developing a new product, as opposed to enhancing or building on an existing product. We can segment this concept further into two types of new products
Green & Brown Field Projects
A Greenfield project can describe any project that a team starts from scratch. The term comes from real estate, where it conveys the image of a literal green-field site for development, undisturbed by previous construction.
Brownfield project is a term used in urban planning, which means land that has been used previously but is lying vacant or unused now. This land could have been contaminated by industrial waste or hazardous waste or might have suspected oil contamination.