Jeff Bezos's 2002 Mandate

Jeff Bezos issued a famous, internal mandate stating that all teams would expose their data and functionality through service interfaces, communicating solely through these APIs, and that these services must be externalizable. This philosophical shift laid the groundwork for AWS and services like SQS.

Significance

This mandate fundamentally changed Amazon's internal architecture, forcing a move towards loosely coupled, API-driven services, which directly led to the creation of the external AWS offerings.