The method of systemic constellations is today widely associated with the name Bert Hellinger. It is often referred to as "constellations according to Hellinger." Certain aspects of Hellinger's conceptualizations and approaches have led to intense controversies and polarizations among supporters and opponents of this method in the German-speaking world. Additionally, there has been a debate about whether this constitutes a systemic approach. This volume features highly engaging articles, discussions, and statements from three prominent systemic practitioners from Heidelberg - Fritz B. Simon, Gunther Schmidt, and Gunthard Weber - regarding constellation work. They address the premises, the mechanisms of action, and their different approaches in constellation work.