Triarchy (theory)
The theory of triarchy (from the Greek τρι- "three" and ἄρχω arkho, "to rule") refers to the (supposed) three fundamental ways of getting things done in organizations: hierarchy, heterarchy and responsible autonomy.
All organizations use a mixture of these three ways, but the proportions can differ widely. At present, hierarchy is usually considered essential for all organizations. Heterarchy and responsible autonomy are often misunderstood or neglected.