The Modular Monolith

1. What People Actually Want From Services

List the benefits teams expect when they ask for microservices, and something becomes obvious.

• Clear ownership of an area of the system.
• The ability to change one area without reading all of it.
• A limited area of damage when a change is wrong.
• Working without blocking other teams.
• Replacing one part without rewriting the rest.

Four of those five require a boundary. Only one of them, the ability to deploy independently, requires a network.

Almost everything people want from services comes from the boundary. The network is what you pa