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Monday, 6 December 2021

Workshop: Event-Driven Architecture

Event-Driven Architecture

Before we dive into the workshop, let’s clarify what we mean by event-driven architecture:

Event-Driven Architecture is a software architecture paradigm promoting the production, detection, consumption of, and reaction to events.

Events move through event-driven applications in two ways:

  • Choreography - Events between microservices
  • Orchestration - Events inside microservices

Let’s look at some of the advantages we gain from applying an event-driven architecture to our applications:

  • Asynchronous requests allow resources to move freely to the next task once their unit of work is complete, without worrying about what happened before or will happen next
  • Loosely coupled event-driven services operate independently, without knowledge of other services, including their implementation details and transport protocol
  • Simple scaling of individual services thanks to decoupling
  • Recovery support through “event replay”


Applying an event-driven architecture to serverless applications is a very powerful and natural design pattern.

But it can be a pretty abstract concept to grasp, particularly if you are new to serverless or AWS and trying to learn everything at once.

The Event-Driven Architecture workshop is a hands-on approach to form a mental model of how events flow through a serverless application and why this is a useful paradigm. We will cover:

  • Amazon API Gateway
  • Amazon EventBridge
  • AWS Step Functions
  • AWS Cloud Development Kit (CDK)

The workshop can be found at https://luke-hedger.gitbook.io/event-driven-architecture-workshop/

For a nice bonus we will prefer to use direct service integrations over Lambda functions.

And it is Christmas themed! 🎄