# Event-Driven Architecture

> Build applications that respond to events asynchronously

- **Category**: Cloud
- **Subcategory**: gcp
- **Canonical URL**: https://designpattern.fyi/patterns/gcp_event_driven_architecture/

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## Description
The Event-Driven Architecture pattern builds applications that respond to events asynchronously using services like Cloud Pub/Sub, Eventarc, and Cloud Functions. This decouples producers and consumers, enables loose coupling, and provides scalability. Events represent state changes that other services can react to independently.


## Use Cases
Use when building applications that need to react to state changes asynchronously or when you want to decouple services through events.





## Trade-offs


### Advantages

- Loose coupling between services

- Scalable architecture

- Asynchronous processing

- Natural fit for cloud-native applications




### Considerations & Drawbacks

- Complex error handling

- Event ordering challenges

- Debugging distributed systems







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**Reference**: [Original Source](https://cloud.google.com/architecture/hybrid-multicloud-patterns-and-practices)