The Cement Sustainability Initiative (CSI) is a global effort led by the World Business Council for Sustainable Development (WBCSD) to promote sustainable practices in the cement industry. Launched in 2002, the initiative focuses on reducing the environmental impact of cement production, which is a significant contributor to greenhouse gas emissions. CSI brings together major cement companies to share best practices, develop sustainable technologies, and improve energy efficiency. The initiative aims to enhance the industry's overall sustainability by addressing issues such as resource management, emissions reduction, and community engagement.