In the B2B world, product managers balance competing interests and stakeholders to keep products on a successful path. Forrester defines product management as the function responsible for the commercial success of a company’s product portfolio. Product managers oversee each product from inception and ideation through design, build, launch, growth and enhancement, maintenance, and eventual sunset. In this report, we introduce the Product Management Range Of Responsibilities Model, which defines the role of the product manager across five disciplines.