This article presents an analysis of classical (“Old Public Administration”, “New Public Management”, “Good Governance”) and relatively new approaches in public administration (E-government, Digital Public Administration, client-centered, process and project approaches). The purpose of the study is to conduct a comprehensive analysis of each approach and explore how their combined use can lead to more effective delivery of public services. The study used the method of a systematic literature review of relevant scientific sources, followed by a comparative analysis of the key features and characteristics of each approach. The results of the analysis show that each approach has unique contributions and limitations, and their effectiveness depends on a number of contextual factors. Old Public Administration focuses on hierarchy, rules and procedures and is effective in ensuring administrative efficiency and accountability. New Public Management emphasizes market principles, such as results-based budgeting, decentralization and competition, and aims to improve efficiency, effectiveness. Good Governance emphasizes democratic values, transparency, accountability and citizen participation in decision-making processes. E-government and digital government approaches aim to use technology to improve the efficiency of government, accessibility and quality of public services. The customer-centered approach focuses on understanding the needs and preferences of citizens and providing customized services that meet their expectations. The process approach emphasizes the importance of systematic planning, implementation and evaluation of public policies and services to achieve the desired results. The project-based approach focuses on the use of project management principles, such as stakeholder engagement, risk management and performance monitoring, to implement complex public projects. The design and implementation of public policies and services must take into account the context, citizen needs and preferences, and broader societal interests. The study emphasizes the importance of continuous learning and adaptation in public administration to meet the changing challenges and needs of society. The study concludes that there is no one-size-fits-all approach to public administration, and a multifaceted approach is necessary for the effective and efficient functioning of the state apparatus.