The document discusses the SPIN selling model, which involves asking prospects questions in a specific sequence: Situation, Problem, Implication, and Need-payoff. Situation questions provide context but don't benefit the buyer. Problem questions clarify issues and dissatisfactions. Implication questions develop problems' seriousness to increase motivation. Need-payoff questions get buyers to discuss how solutions meet their explicit needs and benefits. SPIN suggests opening with questions, not features, and setting call objectives to obtain commitments through understanding needs rather than persuasion. It emphasizes preventing over handling objections by not introducing solutions too soon.