Dell's business model involves selling computers directly to customers by building computers based on customer orders rather than maintaining large inventories. This allows Dell to minimize costs and bring new products to market quickly. Dell's direct sales and build-to-order model has proven more successful than traditional manufacturers' strategies and enabled Dell to increase its market share and profitability. The document outlines Dell's business model and compares it to traditional manufacturers, and notes how Dell's customer-focused model gave it an advantage in the PC industry.