A company wants to store files in the AWS Cloud and provide users with direct download access via a public URL. Which AWS service or feature should they use?

Amazon S3 (Simple Storage Service) is the correct choice because it is an object storage service designed for high availability, durability, and scalability. It allows you to store and retrieve any amount of data from anywhere on the web, making it ideal for hosting static files and providing public download access via unique URLs. Amazon Redshift is a data warehousing service, not suitable for general file storage and public access. Amazon Elastic Block Store (EBS) provides block-level storage volumes for EC2 instances, primarily for operating systems and application data, not direct public file access. Amazon Elastic File System (EFS) provides scalable file storage for EC2 instances, but it's a network file system, not designed for direct public internet access to individual files like S3.