Which AWS service can a developer configure to directly process each single S3 event for each S3 object upload?

Explanations:

Amazon EC2 is a virtual server that requires manual configuration and management. It’s not ideal for processing individual S3 events in real-time, especially for lightweight tasks like image resizing.

Amazon ECS is a container orchestration service. While it can run tasks in response to S3 events, it requires more overhead and is typically used for large-scale, complex applications, not single event processing like image resizing.

AWS Elastic Beanstalk is a Platform as a Service (PaaS) that manages application deployment. It’s useful for large web applications but is overkill for processing single S3 events for tasks like resizing images.

AWS Lambda is a serverless compute service that allows you to execute code in response to events. It can be configured to trigger automatically from S3 events, making it ideal for processing each individual object upload for tasks such as resizing images.