Public-sector decisions shape how institutions function, how services are delivered, and how communities experience public value. Each decision represents a convergence of information, judgment, and responsibility, and its quality is defined by the clarity, fairness, and transparency of the process that leads to it. Because public organisations must balance limited resources with high expectations for accountability, decision-making becomes a central component of governance. Effective decision processes combine analysis, deliberation, and ethical reasoning. Digital tools such as data analytics, Local Digital Twins, and AI support this work by revealing relationships, simulating consequences, and clarifying trade-offs. These technologies strengthen evidence-based insight while leaving ethical judgment, collaboration, and value alignment as essential human responsibilities. This learning unit introduces the key steps and features of decision-making in the public sector. Learners explore how structured processes and digital tools help translate decisions into action while maintaining transparency, legitimacy, and alignment with public purpose.