A Brief Review of Systems Theories and Their Managerial Applications

[Modified excerpt] Systems theory is an interdisciplinary theory about every system in nature, in society and in many scientific domains as well as a framework with which we can investigate phenomena from a holistic approach. Systems thinking comes from the <i>shift in attention from the part to the whole</i>, considering the observed reality as an integrated and interacting unicuum of phenomena where the individual properties of the single parts become indistinct. In contrast, the relationships between the parts themselves and the events they produce through their interaction become much more important, with the result that <i>system elements are rationally connected</i> towards a shared purpose. The systemic perspective argues that we are not able to fully comprehend a phenomenon simply by breaking it up into elementary parts and then reforming it; we instead need to apply a global vision to underline its functioning. Although we can start from the analysis of the elementary components of a phenomenon, in order to fully comprehend the phenomenon in its entirety we have to observe it also from a higher level: a holistic perspective. [<i>Service Science</i>, ISSN 2164-3962 (print), ISSN 2164-3970 (online), was published by Services Science Global (SSG) from 2009 to 2011 as issues under ISBN 978-1-4276-2090-3.]