This document is a practical implementation guide designed to assist Chief Information Officers (CIOs) in government agencies in transitioning from pilot projects to production-ready AI systems within a 90-day timeframe. It outlines the necessity for government agencies to modernize citizen services amidst challenges such as legacy systems and budget constraints. The guide details the concept of Agentic AI, which enables autonomous decision-making and integrates seamlessly with existing systems. It presents a structured approach divided into three phases: Foundation, Build and Integrate, and Operationalize and Scale. Each phase includes specific objectives, such as selecting key use cases, building operational agents, and establishing governance frameworks. Additionally, the document highlights various use cases for Agentic AI across different sectors, including citizen services, health, public safety, and education, emphasizing the potential for improved efficiency and citizen engagement. The guide aims to provide a clear roadmap for successful AI implementation in government.