In the fine grained services approach that we use at Amazon, services do not only represent
a software structure but also the organizational structure. The services have a strong
ownership model, which combined with the small team size is intended to make it very easy
to innovate. In some sense you can see these services as small startups within the walls of
a bigger company. Each of these services require a strong focus on who their customers are,
regardless whether they are externally or internally.
3. **Setting team boundaries** * A cross-functional team should have a mission. A mission is inspirational: it gives the team something to strive toward but also sets the boundaries of a team’s responsibilities. 4. **Infrastructure, platform, and product**