Building Scalable Event-Driven Architectures on AWS | SNS, SQS & Lambda Explained

In this video, we walk through a real-world, scalable event-driven architecture on AWS, designed to handle high-volume data with reliability, fault tolerance, and efficiency.

You’ll learn how an Amazon SNS topic fan-outs messages to multiple SQS queues, which then trigger AWS Lambda functions for asynchronous processing. This architecture helps teams build loosely coupled, scalable systems that maintain eventual consistency under heavy load.

📌 What you’ll learn in this video:

How SNS broadcasts events to multiple consumers

Using SQS queues to decouple services

Triggering Lambda functions asynchronously

Implementing Dead-Letter Queues (DLQ) for error handling

Designing idempotent logic to prevent duplicate data processing

Monitoring events using Amazon CloudWatch

Optimizing costs with message batching

Building systems that scale without tight dependencies

This project serves as both a hands-on practical implementation and a design-pattern reference for cloud engineers preparing for real-world system design interviews.

The explanation and structure of this video were created with the help of NotebookLM, ensuring a clear, logical, and well-organized technical flow.
🎯 Who is this video for?

DevOps Engineers

Cloud Engineers

Backend Developers

AWS learners preparing for interviews

Anyone interested in event-driven architectures

👍 If this video helped you:

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