Amazon S3 Event Notifications with Amazon EventBridge help you build advanced serverless applications faster

You can now use Amazon S3 Event Notifications with Amazon EventBridge to build, scale, and deploy event-driven applications based on changes to the data you store in S3. This makes it easier to act on new data in S3, build multiple applications that react to object changes simultaneously, and replay past events, all without creating additional copies of objects or developing new software. With increased flexibility to process events and send them to multiple targets, you can now create new serverless applications with advanced analytics and machine learning at scale more confidently without writing single-use custom code.

Source:: Amazon AWS