Artificial Intelligence (AI) has evolved from a discrete technology into a systemic infrastructure shaping knowledge, power, and institutional accountability. Yet the global governance landscape remains fragmented between ethics, law, and technical standards. The AIGN Declaration on Systemic AI Governance defines the operating principles for the age of intelligent systems. It establishes seven systemic pillars — Systemic Governance, Responsibility by Design, Continuous Assurance, Transparency of Intent, Global Interoperability, Education and Culture, and Trust Infrastructure — forming a coherent architecture that connects ethical purpose, legal obligation, and technical assurance. Building upon the OECD AI Principles (2019), UNESCO Recommendation on the Ethics of AI (2021), ISO/IEC 42001 (2023) and the EU AI Act (2024), the Declaration proposes a meta-framework for global interoperability of trust. It complements existing governance regimes by transforming compliance into capability and regulation into architecture. Citation: Upmann, P. (2025). The AIGN Declaration on Systemic AI Governance: Defining the Operating Principles for the Age of Intelligent Systems. Zenodo. https://doi.org/10.5281/zenodo.[your-doi] © 2025 Patrick Upmann / AIGN — All terminology, frameworks, and governance logics are the intellectual property of Patrick Upmann and AIGN. Non-commercial citation permitted with attribution. Commercial use requires prior written permission.