Event-Driven Architecture in Cloud Computing

Jul 25, 2022
Event-Driven Architecture in Cloud Computing
Event-Driven Architecture in Cloud Computing

Event-driven architecture (EDA) is a software architectural pattern that promotes the production, detection, consumption, and reaction to events. Event-driven systems typically process and respond to events in near-real-time. A significant benefit of this approach is that it enables applications to be more loosely coupled and thus easier to develop, modify, replace, and scale. In an event-driven architecture, services communicate with each other by producing and responding to events. This can be contrasted with a request/response model in which services communicate with each other by invoking requests and waiting for responses. Event-driven architectures are often used in cloud computing, making it possible to build microservices that are loosely coupled and can be deployed and scaled independently.

Cloud Computing providers use event-driven architecture, which relies on event-driven software to respond to events within their own cloud. This architecture is often used in applications that require real-time processing, such as stock trading or event notifications. In these applications, event-driven software is essential for providing timely responses to events. Cloud Computing uses event-driven architecture because it allows the cloud provider to respond quickly to changes in demand and allows them to integrate cloud services to work together efficiently. This flexibility is one of the advantages of Cloud Computing.

Amazon Web Services - Event Bridge

AWS EventBridge is a serverless event bus connecting AWS services and your own applications easily. You can use EventBridge to route events from AWS services to your AWS Lambda functions, Amazon Kinesis streams, Amazon SQS queues, and other AWS targets. EventBridge is designed to work with many AWS services, making it easy to start quickly. And, because EventBridge is serverless, you don't have to worry about provisioning or managing any infrastructure.

How Amazon EventBridge connects applications using events

Google Cloud - Eventarc

Google Eventarc allows you to build event-driven architectures without implementing, customizing, or maintaining the underlying infrastructure. The Eventarc platform offers a standardized way to manage state changes between decoupled microservices. As soon as an event is triggered, Eventarc routes it through Pub/Sub subscriptions to various destinations (see Event destinations) while managing delivery, security, authorization, observability, and error handling. Eventarc can be managed using the Google Cloud Console, the gcloud CLI, or the Eventarc API.

Microsoft Azure - EventGrid

Azure EventGrid is a Azure service that allows for event-driven architecture. It uses an eventing system that allows different Azure services to communicate with each other. Azure EventGrid has been designed to be highly scalable and reliable. It can process high volumes of events in near real-time. Azure EventGrid is a crucial part of Azure's event-driven architecture and provides a way for Azure services to react to events in near real-time. This allows Azure services to be more responsive and provide a better user experience. Azure EventGrid is a critical part of many Azure solutions and is used by Azure service teams internally.

Event Grid model of sources and handlers

Why Use an Event-Driven Architecture?

There are several reasons why you might want to use an event-driven architecture. One reason is that it can make your application more responsive. In a traditional request/response model, a client has to wait for a response from the server before it can take any further action. This can lead to delays in the UI if the server is slow to respond. With an event-driven architecture, the target can take action as soon as it receives an event from the source. This can make the UI more responsive and improve the user experience.

Another reason to use an event-driven architecture is that it can make your application more scalable. In a traditional request/response model, each client has to establish a separate connection to the server. This can lead to scalability problems if the number of clients grows. With an event-driven architecture, all clients subscribe to the same event stream. This allows the application to scale more quickly as the number of clients grows.

Finally, an event-driven architecture can make your application more resilient. In a traditional request/response model, if the server goes down, the client will not be able to get a response. With an event-driven architecture, the client can continue to process events even if the server is unavailable. This can make your application more resilient and improve uptime.


Event-driven architecture is the design pattern of the cloud. It has many advantages, but there are some limitations to consider when using it. The most significant one is whether you use EventBridge, EventArc, or EventGrid depends on using a single cloud. You can help you overcome these limitations and build an event-driven architecture that meets your specific needs by using a cloud-agnostic tool like TriggerMesh open source integration platform, which can build multi-cloud and hybrid cloud event-driven applications. 

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