The public administration is above all for us, the protection of our rights and the pursuit of the public good. This handbook will be of interest to all those concerned with the proper functioning of public administration: individuals who apply for public services and action and the public officials who process their applications; lawyers, judges and ombudspersons involved in the review of the public administration’s activities; and policy makers and legislators concerned with public administration reform. It also takes into account the increasing use of artificial intelligence systems and automated decision making by administrative authorities in their dealings with individuals. It sets out and explains the substantive and procedural principles of administrative law concerning relations between individuals and public authorities, with commentary backed up by references to the Council of Europe legal instruments (conventions, recommendations and resolutions) from which each principle is drawn and to the relevant case law of the European Court of Human Rights.