Business model canvas is primarily a strategic tool to aid in creation of innovation business models. However, due to the mapping of the various resources needed for service creation it also helps to build understanding of the critical moments that can affect the service offering.
Additional reading
Osterwalder, Alexander, and Yves Pigneur. “Business Model Generation: A Handbook For Visionaries, Game Changers, And Challengers Author: Alexander Osterwalder, Yves.” (2010)