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AWS SQS, SNS, and EventBridge: How They Differ and Work Together

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As developers shift from monolithic apps to microservices, managing inter-service communication becomes a key challenge, and AWS offers three distinct messaging tools to address it. Amazon SQS is a pull-based message queue that buffers workloads, letting consumers process tasks at their own pace without overwhelming the system. Amazon SNS is a push-based pub/sub service that instantly broadcasts a single message to multiple subscribers simultaneously, making it ideal for fan-out scenarios. Amazon EventBridge is a serverless event bus that uses rule-based routing to intelligently direct events from apps, AWS services, or third-party platforms to the right destinations. Used together — as in a food delivery pipeline where EventBridge routes events, SNS fans them out, and SQS queues them for safe processing — these services enable resilient, loosely coupled architectures.

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AWS SQS, SNS, and EventBridge: How They Differ and Work Together · ShortSingh