Communities of practice

A community of practice is a group of people who share a concern or passion for something they do, and who learn how to do it better through regular interaction. The concept, developed by Etienne Wenger in collaboration with Jean Lave, identifies three constitutive dimensions: joint enterprise (what the group is about), mutual engagement (how members interact), and shared repertoire (the resources produced over time). Unlike formal organizations, communities of practice are not designed; they emerge organically around shared practice and persist because they serve a learning function that no formal structure can replicate.

The concept has been applied to understand how expertise propagates through organizations, how open-source software projects sustain collaboration without hierarchical management, and how social network structures shape the diffusion of innovation. A community of practice can be seen as a complex adaptive system in which individual learning and collective knowledge co-evolve.