This guide outlines the process of benchmarking diversity, equity, inclusion, and belonging (DEI&B) within organizations. It begins by addressing key questions that help measure growth in DEI&B metrics, collect and store relevant data, and support DEI&B throughout the employee lifecycle. The guide emphasizes the importance of continuous monitoring of DEI&B initiatives to ensure they have a meaningful impact on workplace culture and business outcomes. It discusses the challenges organizations face in accessing benchmarking data and the legal considerations regarding personally identifiable information. The document also highlights the need for organizations to connect DEI&B metrics to their strategic goals and financial decisions. By leveraging data-driven insights, companies can enhance their DEI&B efforts and drive organizational effectiveness. The guide concludes by stressing that measuring DEI&B metrics is crucial for capturing the overall return on investment in talent and fostering long-term organizational growth.