Several key metrics can be employed to measure sustainability: 1. Carbon Footprint: Measures the total greenhouse gas emissions caused directly or indirectly by the company. 2. Water Usage: Tracks the amount of water consumed and aims for reduction and efficient usage. 3. Waste Management: Measures the amount of waste generated and the effectiveness of recycling and waste reduction programs. 4. Energy Efficiency: Evaluates how efficiently a company uses energy and its investments in renewable energy sources. 5. Employee Well-being: Assesses the overall well-being, satisfaction, and engagement of employees.