Amazon Simple Storage Service (S3) is a widely used object storage service that provides a durable and scalable way to store data. S3 event notifications are a powerful feature that allows you to receive notifications when certain events occur in your S3 buckets. This can be useful for a variety of purposes, such as triggering workflows, monitoring data usage, and responding to security events.
What are S3 event notifications?
S3 event notifications are messages that are sent to an Amazon Simple Notification Service (SNS) topic or an Amazon Simple Queue Service (SQS) queue when a specific event occurs in an S3 bucket. The event can be triggered by a variety of actions, such as an object being created, deleted, or updated. The notification message contains information about the event, such as the object name, the bucket name, and the type of event.
Why use S3 event notifications?
There are many reasons to use S3 event notifications. Here are a few of the most common:
Trigger workflows: You can use S3 event notifications to trigger workflows in other AWS services, such as AWS Lambda and AWS Step Functions. This can be useful for automating tasks, such as processing new data , scanning files or sending notifications.
Monitor data usage: You can use S3 event notifications to monitor data usage in your S3 buckets. This can help you to identify trends and potential problems.
Respond to security events: You can use S3 event notifications to respond to security events, such as unauthorized access to your S3 buckets. This can help you to protect your data and your business.
How to configure S3 event notifications
Configuring S3 event notifications is a simple process. You can do it using the AWS Management Console, the AWS Command Line Interface (CLI), or the AWS SDKs.
Here are the steps on how to configure S3 event notifications using the AWS Management Console:
Go to the S3 console and select the bucket that you want to enable notifications for.
Click on the Properties tab.
In the Event Notifications section, click on Create event notification.
Select the event type that you want to be notified about.
Select the destination for the notifications, such as an SNS topic or an SQS queue.
Click on Create notification.
What are some common S3 event notification use cases?
Here are some common S3 event notification use cases:
Trigger a Lambda function to process a new image when it is uploaded to an S3 bucket.
Send an email notification to the administrator when an object is deleted from an S3 bucket.
Create an AWS CloudWatch alarm when the number of objects in an S3 bucket exceeds a certain threshold.
Traditionally we have had SQS , SNS and lambda integrations only. We now also have AWS Eventbridge integration
