Lean management aims to maximize customer value through the reduction of waste in processes. It addresses issues like low productivity, long cycle times, high costs, waste, and dissatisfied customers and employees. While similar to alternatives like Six Sigma and Scientific Management, lean management can be implemented immediately without specialized training and involves the entire workforce in improvements. Key principles include adding value, shifting focus from departments to processes, delaying commitments, and discouraging departmental evaluations. Companies that have successfully implemented lean management, like Toyota and Starwood Hotels, have seen significant gains in productivity, reductions in waste, and improvements in revenues and customer satisfaction.