This document discusses business-to-business (B2B) marketing. It describes the various B2B markets which include manufacturers and service providers, resellers, institutions, and government. The stages of the B2B buying process are then outlined which include need recognition, product specifications, request for proposal (RFP) process, proposal analysis and supplier selection, order specification, and vendor performance assessment. The roles in the buying center such as influencer, decider, buyer, user, gatekeeper, and initiator are also defined. Different organizational cultures like democratic, consultative, consensus, and autocratic are described. Finally, the types of buying situations - new buy, straight rebuy, and modified rebuy are