Book excerpt: The OECD Guidelines on Corporate Governance of State-Owned Enterprises give concrete guidance to help policy makers evaluate and improve the legal, regulatory and institutional framework for the ownership and governance of state-owned enterprises (SOEs). They identify the key building blocks to ensure professionalised ownership and governance, and offer practical guidance for implementation at the national level. The Guidelines ensure state-owned enterprises contribute to sustainability, economic security and resilience, by maintaining a global level playing field and high standards of integrity and business conduct.