The Microsystem is made up of the interpersonal relationships as well as activities and roles of a person in its various settings, e.g. family setting, work setting.
The Mesosystem comprises the interrelationships and connections between two or more Microsystems of which the person is part of, such as the relationship between the family and work.
The Exosystem does not involve the person directly in that he is not an active participant. But events may occur in the Exosystem that affect what happens in the Microsystem and Mesosystem.
A company may for example introduce a new service that changes the way the person's family spends its leisure time.
The Macrosystem entails the cultural stability, the social values and beliefs that define the other three systems and how they interrelate. Society for example has certain perceptions about
how companies should behave in this day and age. These perceptions impact on the way corporations now need to manage their reputations.
Analysing and assessing stakeholders across these levels ensures a more profound understanding and the ability to initiate engagement strategies that have meaningful and sustainable effect.