The Balanced Coupling Model

A comprehensive reference for understanding the Balanced Coupling model as described by Vlad Khononov. This document synthesizes the full model from the companion blog at coupling.dev, covering its foundations, dimensions, balancing mechanics, relationship to prior coupling models, and connections to domain-driven design.

1. Foundations: Why Coupling Matters

1.1 Coupling Is Not the Enemy

The term "coupling" has long been synonymous with bad design. The balanced coupling model challenges this assumption. According to the dictionary, coupling is simply a device for connecting parts. If a system is a set of components interacting to achieve a goal, then coupling is what connects those components and makes it possible to achieve those goals. Coupling is what makes the value of a system greater than the sum of its parts.

You cannot build a system out of fully independent components — that would go against the very definition of "system." The question is not whether to couple, but how to couple. Some forms of coupling lead to modularity; others create complexity. The balanced coupling model treats coupling not as a nuisance to eliminate but as a design tool to wield deliberately.

1.2 Complexity (via Cynefin)

The model adopts the Cynefin framework's definition of complexity: