Benchmarking allows companies to compare their key metrics and performance to other businesses in their industry. This helps companies identify how well they are performing and where they can improve. The benchmarking process involves determining metrics to measure, identifying best competitors, collecting data, comparing performance, identifying gaps, establishing action plans, setting targets, implementing plans, and monitoring progress. There are three levels of benchmarking: internal between a company's units, competitive between directly comparable companies, and functional which compares specific functions like distribution across industries.