ecoinvent is an internationally active, mission-driven organization devoted to supporting high-quality, science-based environmental assessments. Its activities include publishing and maintaining the ecoinvent database, a comprehensive life cycle inventory database that provides reliable and transparent information on the environmental impacts of various products and services. Companies, researchers, and policymakers use the database to analyze the environmental impact of their operations, make informed decisions, and develop sustainable practices. The ecoinvent database lays the foundation for life cycle assessment projects, eco-design, and product environmental information. Since 2003, it has enabled companies to manufacture their products more harmoniously with the environment, policymakers to implement new policies, and consumers to adopt more environmentally friendly behavior. The new version 3 is a further milestone in life cycle assessment: new and updated data offer ecoinvent users a more significant number of possible applications in the areas of e.g. chemical production, foodstuffs, and electricity. The newest release of the ecoinvent database is ecoinvent v3.9: https://ecoinvent.org/the-ecoinvent-database/data-releases/ecoinvent-3-9/