🧹💸 AWS Lambda: Unused EBS Snapshot Cleanup (Cost Optimization Project) 💸🧹

Automated AWS Lambda function that identifies and deletes unused, orphaned, or outdated EBS snapshots to help reduce your AWS bill and keep your infrastructure clean 🧼.

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🚀 Features

✅ Deletes EBS snapshots that are:

• 📤 Not attached to any volume
• 🔌 Taken from volumes not connected to any running EC2 instance
• 🗑️ Linked to deleted volumes

📊 Logs every action into CloudWatch Logs for traceability
🔐 Uses least privilege IAM role
🧠 Written in Python using boto3

💡 Currently manually triggered from the AWS Lambda Console (EventBridge integration optional)

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🛠️ Technologies Used

Service / Tool	Purpose
☁️ AWS Lambda	Serverless compute environment
💽 EBS Snapshots	Identified and cleaned up
🖥️ EC2 Instances	Checked for volume attachments
🔐 IAM Roles	Secure, scoped access permissions
📦 boto3 SDK	Python AWS SDK to interact with AWS
📊 CloudWatch Logs	Audit + Debugging

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🧠 Architecture

🧑‍💻 Manual Trigger (via AWS Lambda Console or CLI) | ▼ 🧠 AWS Lambda Function (Python + boto3 logic) | ▼ 📦 EC2 API Calls: ├─ 🖥️ describe_instances ├─ 💽 describe_volumes ├─ 🧾 describe_snapshots └─ ❌ delete_snapshot (if conditions met) | ▼ 📊 CloudWatch Logs: └─ 📝 Logs all deletions and errors for audit/debug