4.1. Integration & Messaging Patterns

Building scalable and resilient cloud applications often requires components to communicate asynchronously and react to events. This is achieved through integration and messaging patterns.

The First Principle is that designing applications with asynchronous communication and event-driven patterns fosters loose coupling, enabling independent scaling, improved fault tolerance, and greater agility for complex distributed systems.

This section explores core AWS services that facilitate these integration and messaging patterns.

Scenario: You need to design an application where different components need to communicate, but you want to avoid tight coupling to improve scalability and resilience. Some communications need to be one-to-one, while others are one-to-many.

Reflection Question: How do asynchronous communication and event-driven patterns fundamentally improve the scalability, fault tolerance, and agility of your applications by fostering loose coupling between different components?