Communities of Practice

Definition

A community of practice is a group of people who share a concern, a set of problems, or a passion about a topic, and who deepen their knowledge and expertise in that area by interacting on an ongoing basis. Membership isn't defined by working together daily but by finding value in the interaction itself: sharing information, solving problems together, and — over time — developing a shared perspective, a body of common knowledge, and a sense of identity.

In the Book

The book opens by insisting these groups are not a new invention but "our first knowledge-based social structures," tracing them from cave dwellers discussing arrowhead shapes, through Roman craft corporations and medieval guilds, to modern examples: engineers who design phase-lock loops comparing notes, soccer parents swapping parenting tips, artists debating technique in cafés. What has changed is not the structures themselves but organizations' need to recognize and intentionally cultivate them, because knowledge has become "too valuable a resource to be left to chance." The book's running example is DaimlerChrysler's Tech Clubs — informal, cross-platform engineering groups that grew into a network of over a hundred officially sanctioned communities responsible for design reviews, documenting lessons learned, and standardizing practices across the company.

Why It Matters

Naming this pattern lets an organization treat something that already exists informally — people clustering around shared expertise — as a resource to be recognized, supported, and connected to strategy, rather than either ignoring it or trying to replace it with formal reporting structures or IT knowledge-databases. The concept gives leaders a category distinct from both "team" (defined by a shared task and deliverable) and "department" (defined by a reporting line): a group defined by what its members are collectively getting better at.