Sustainability performance is the comprehensive assessment and measurement of an entity's impacts across environmental, social, and economic dimensions. This concept, functioning as both a research field and a methodological approach, evaluates the extent to which activities contribute to or detract from long-term ecological balance, social equity, and economic viability. It investigates the complex interdependencies and trade-offs inherent in these dimensions, utilizing metrics, indicators, and integrated reporting frameworks. Key characteristics include a multi-stakeholder perspective, emphasis on transparency and accountability, and the integration of diverse data types. The significance of sustainability performance lies in its capacity to inform strategic decision-making, drive organizational transformation, facilitate benchmarking, and monitor progress towards sustainable development goals.