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Building Event-Driven Applications with AWS Lambda and S3

Building Event-Driven Applications with AWS Lambda and S3

Learn how Amazon S3, AWS Lambda, Amazon SNS, and IAM work together to build a secure, automated, and cost-aware document-processing workflow.

Series: AWS Community & Learning (2 articles)

  1. 1
    Don’t Chase Badges — Build Real Connections Through Interviews
  2. 2
    Building Event-Driven Applications with AWS Lambda and S3 This article

Event-driven architecture allows AWS services to respond automatically to events without requiring constant manual intervention.

For example, when a user uploads a file to Amazon S3, an event can trigger AWS Lambda to process the file and Amazon SNS to send a notification.
Key services:
✅Amazon S3: Stores uploaded files.
✅AWS Lambda: Runs code in response to events.
✅Amazon SNS: Sends notifications.
✅AWS IAM: Manages permissions securely.
When designing this architecture, consider least-privilege access, duplicate event handling, monitoring, and cost management.
By combining these services, developers can build scalable, automated, and maintainable cloud applications.

What other AWS services would you add to make this workflow more reliable ?
# solutions-architect# event-driven# serverless# agentic-ai# amazon-s3

Series: AWS Community & Learning (2 articles)

  1. 1
    Don’t Chase Badges — Build Real Connections Through Interviews
  2. 2
    Building Event-Driven Applications with AWS Lambda and S3 This article
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