Ecommerce Sustainability Metrics are a powerful tool for businesses to measure and reduce their environmental impact. Key metrics include assessing carbon footprint, energy consumption, waste generation, water usage, product sustainability, transportation efficiency, and renewable energy adoption. Strategies for improving sustainability include optimizing supply chains, investing in energy-efficient technologies, redesigning packaging, sourcing sustainably, and educating consumers. Challenges include data collection, costs, and changing consumer behavior. Sustainable ecommerce can lead to environmental stewardship, cost efficiency, customer loyalty, and long-term viability.