The document discusses SPIN® 2.0 Selling, which is a questioning model developed by Huthwaite to uncover customer needs during sales calls. It uses four types of questions - Situation, Problem, Implication, and Need-payoff. The SPIN® 2.0 Selling program teaches skills to understand customer issues, help them see problems, demonstrate value, and manage sales processes. Huthwaite also offers public workshops and customized training to teach proven sales methodologies and help attain sales goals.