Taco Bell was experiencing reduced productivity and negative growth compared to its competitors. An analysis identified outdated management practices and a top-down structure that did not focus on customers as the underlying issues. Taco Bell reengineered its operations by reorganizing human resources, redesigning processes, eliminating management levels, and focusing on customer value. This included limiting kitchen space, increasing customer space, introducing new systems like K-Minus to cook food off-site and TACO for computerized operations. After reengineering, Taco Bell's performance improved and it became the market leader through a customer-centric approach.