Two-pizza teams

Two-pizza teams is an organizational principle popularized by Amazon, stating that teams should be small enough to be fed with two pizzas — typically fewer than ten people. The principle is not about food but about communication topology: small teams have fewer internal communication links, faster decision cycles, and clearer ownership boundaries.

The two-pizza rule is a practical application of Conway's Law at the organizational design level. By constraining team size, Amazon constrained the complexity of the systems each team could build, which naturally produced the microservice architecture that emerged from its engineering culture. The principle has since been adopted by other technology companies, though often without the accompanying cultural infrastructure — such as API-first design and autonomous deployment — that makes small teams functionally independent.

The two-pizza rule is frequently misunderstood as a management technique. It is not. It is a systems design constraint that happens to be expressed in units of pizza. The real constraint is not appetite but the number of edges in the team's communication graph.