This project sets up an AWS S3 upload notification system using AWS Lambda, SNS, and S3. When an object is uploaded to an S3 bucket, a Lambda function is triggered, which publishes a notification to an SNS topic. Subscribers to the SNS topic receive notifications, enabling real-time awareness of S3 bucket activity.

1. Create AWS Resources:

   • Create an S3 bucket to monitor for object uploads.
   • Set up an SNS topic to receive notifications.
   • Create a Lambda function to trigger on S3 upload events and publish to the SNS topic.

2. Lambda Function Configuration:

   • Write the Lambda function code to handle S3 upload events and publish notifications to the SNS topic.
   • Configure the Lambda function with appropriate permissions to access S3 and SNS.

3. Subscribe to SNS Topic:

   • Subscribe to the SNS topic using your desired endpoint (e.g., email) to receive notifications.

4. Testing:

   • Upload an object to the S3 bucket to trigger the Lambda function.
   • Verify that notifications are successfully delivered via the subscribed endpoint.

To programmatically trigger the Lambda function, you can use the provided Python script notify.py. This script utilizes the AWS SDK for Python (Boto3) to invoke the Lambda function.

1. Install the Boto3 library:

   pip install boto3