Mastering Lambda is a hands-on repository focused on building real-world, production-ready AWS Lambda projects.

This is not theory, not toy examples, and not copy-paste demos. Every project here solves a real cloud problem using event-driven serverless design, exactly how it’s done in real companies.

This repository contains 10 end-to-end AWS Lambda projects (6 completed + 4 upcoming) that cover:

• Security automation
• Disaster recovery & failover
• Log processing & data masking
• Event-driven workflows
• AI-powered media pipelines
• Streaming & real-time processing

Each project is:

• ✅ Built step-by-step
• ✅ Event-driven (SNS, EventBridge, S3, CloudWatch, Kinesis, Step Functions)
• ✅ Focused on real production use-cases
• ✅ Designed with least-privilege IAM and best practices

Automates detection and cleanup of exposed IAM access keys using SNS, EventBridge, and Lambda.

Highlights

• Detect leaked access keys
• Notify via email
• Automatically delete keys more than 90days

Automatically isolates compromised EC2 instances when GuardDuty raises a finding.

Highlights

• GuardDuty → EventBridge → Lambda
• Applies quarantine security group
• Zero manual intervention

Implements automatic DNS failover using Route53 health checks and Lambda.

Highlights

• Primary & DR regions
• Health-based failover
• SNS-driven Lambda execution

Cleans sensitive data from application logs before storing them securely in S3.

Highlights

• Masks emails, phone numbers, credit cards
• CloudWatch Logs → Lambda → S3
• Compliance-friendly logging

Processes streaming transactions in real time and stores suspicious activity in DynamoDB.

Highlights

• Kinesis stream trigger
• DynamoDB persistence
• Near real-time processing

A complete serverless media factory using multiple AWS AI services.

Highlights

• S3 → Step Functions → Lambda
• Video analysis, transcription, metadata storage
• SNS notifications on completion

• 🔄 Advanced Lambda Retry & DLQ Handling
• 🔐 Secrets & Config Management at Scale
• 📊 Cost-Optimized Serverless Analytics
• 🧠 GenAI + Lambda (Bedrock-based workflows)

⭐ Total Target: 10 Production-Grade Lambda Projects

• AWS Lambda
• Amazon EventBridge
• Amazon SNS
• Amazon S3
• Amazon DynamoDB
• Amazon Kinesis
• AWS Step Functions
• Amazon GuardDuty
• Amazon Route53
• AWS AI Services (Rekognition, Transcribe, Bedrock)

• Least-Privilege IAM
• Event-Driven Architecture
• Fault Tolerance
• Multi-Region Awareness
• Clean Separation of Responsibilities
• Production-ready structure

• Cloud & DevOps Engineers
• AWS Lambda Beginners → Advanced
• Serverless Architects
• Anyone tired of “hello-world Lambda demos”

If you’re serious about mastering AWS Lambda in real-world scenarios, this repository is built exactly for that purpose.

Learn less theory. Build more real systems.