The textbook systematically presents the applicable administrative procedural law, with significant consideration of critically analyzed case law. Special emphasis is placed on the historical context and constitutional requirements. Within this framework, the procedures and regulatory contents are accurately depicted at the latest standards, incorporating European law. The needs of students for compact information and an understanding of overarching connections are addressed through structured diagrams, graphical representations, and numerous practical examples from case law. Furthermore, essential concepts of substantive law, such as discretion, subjective public law, administrative acts, and the removal of consequences, are discussed. The textbook is also specifically aimed at practitioners.