For marketers aiming to develop effective strategies in the business-to-business (B2B) market, understanding buyer behavior is essential. A model of business buyer behavior illustrates how external stimuli, such as marketing efforts and broader environmental factors, interact with the internal dynamics of a buying organization. These interactions eventually result in a set of specific buyer responses, including purchasing decisions. The model highlights the need for marketers to comprehend the organizational processes that transform these external stimuli into internal decision-making outcomes.

At the core of this model is the buying activity within an organization, which comprises two main elements: the buying center and the buying decision process. The buying center, a group that includes influencers, decision-makers, users, and those responsible for purchasing or procurement, is the heart of the buying decision process. It's made up of all individuals within the organization who participate in the buying decision, making each one of them integral to the process. The buying decision process involves a series of steps through which the organization evaluates potential purchases, considers alternatives, and ultimately makes purchasing decisions.

Several factors shape the business buying process. Internal organizational factors such as company policies, procurement strategies, and budgetary constraints play a significant role. Interpersonal dynamics within the buying center, as well as the participants' individual preferences, motivations, and expertise, further influence decisions. External factors such as market trends, economic conditions, and technological changes also contribute to the complexity of business buying behavior.