Business markets involve the sale of goods and services to other businesses rather than individual consumers. Business buyers face different situations like straight rebuys, modified rebuys, or new tasks. Multiple people are involved in organizational buying decisions, including users, buyers, influencers, deciders, and gatekeepers. The business buying process involves stages like problem recognition, information search, evaluation of alternatives, purchase decision, and post-purchase behavior. Factors like product characteristics, price, supplier service, and relationships influence business buyer decisions.