Serverless computing in AWS allows you to quickly deploy event-driven computing in the cloud. With serverless computing, there are still servers but you don't have the manage them. AWS automatically manages all the computing resources for you, as well as any trigger mechanisms. For example, when an object gets written to a bucket, that would trigger an event. If another service writes a new record to an Amazon DynamoDB table, that could trigger an event or an endpoint to be called.

The main idea of using event-driven computing is that it easily allows you to transform data as it arrives into the cloud, or we can perform data-driven auditing analysis notifications, transformations, or parse Internet of Things (IoT) device events. Serverless also means that you don't need to have an always-on running service in order to do that, you can actually trigger it based on the event.