Final answer:
Amazon S3 is the AWS service that provides object-level storage, storing data as objects within buckets.
Step-by-step explanation:
The service that provides object-level storage in AWS is Amazon S3 (Simple Storage Service). Amazon EC2 (Elastic Compute Cloud) provides scalable computing capacity, Amazon RDS (Relational Database Service) offers managed relational database service, and Amazon DynamoDB is a NoSQL database service for applications that need high-performance at any scale. Among these services, only Amazon S3 deals with object-level storage, which means that it stores data as objects within resources called buckets. This service is well-suited for a wide range of use cases such as backup and restore, archiving, and enterprise applications.