Lambda S3 File Trigger (Python)

Event-driven serverless automation for S3 bucket uploads.

🎯 Objective

This project implements a basic event-driven architecture where an AWS Lambda function is automatically triggered whenever a new file is uploaded to an S3 bucket.

🚀 Key Features

• Serverless Automation: Zero infrastructure to manage; function runs only on events.
• Event Correlation: Demonstrates how Lambda parses S3 metadata from event objects.
• IAM Best Practices: Uses the principle of least privilege for the Lambda execution role.

🏗️ Architecture

flowchart LR
  User((User)) -->|Upload| S3["S3 Bucket"]
  S3 -->|Event Trigger| Lambda["AWS Lambda (Python)"]
  Lambda -->|Log Filename| CW["CloudWatch Logs"]

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📁 Project Structure

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├── screenshots/    # Step-by-step implementation visuals
└── README.md       # Project documentation

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🛠️ Tech Stack

• Compute: AWS Lambda (Python 3.10)
• Storage: Amazon S3
• Monitoring: CloudWatch Logs
• Security: IAM Roles

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🔧 Setup & Steps

1. Create S3 Bucket

2. Lambda Function Code

Implement the Python logic to process the S3 event.

3. Configure Trigger

Ensure the Lambda function has permissions to be invoked by S3.

✅ Verification

Upload a file and monitor the execution in CloudWatch Logs.

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Created by Tunahan Koç | LinkedIn | GitHub