The document defines business models and their key components. It discusses traditional business models and e-commerce models. For business models, it identifies the main components as the value proposition, target customers, distribution channels, customer relationships, revenue streams, resources, activities, and cost structure. For e-commerce models, it provides examples of revenue streams like advertising, subscriptions, transactions, and sales. It also discusses the value proposition, target market segments, competitive environment, market strategy, and customer relationship management as important components of e-commerce models.