For sustainability to reach the next level,operations staff who make resource decisions need feedback and visibility on the results of their actions, and senior executives need a way to gauge performance so they can reward improvements and troubleshoot lingering problems. The maxim 'what gets measured, gets done' still applies to any organization that intends to drive its operations to a higher level of efficiency. This whitepaper describes a metrics-based approach to sustainability that leverages real-time data to help organizations improve performance.