This year, 2017, we celebrate the 30th anniversary of the International Journal of Public Sector Management. This e-book therefore has a slightly different character than regular or special issues have: it consists of ten contributions by distinguished international expert scholars in the field of public management. They were asked to write an essay on what they consider important developments or remaining questions about public management over the past 30 years. This has led to an interesting and highly varying bundle of essays with a number of common denominators as well.