Which service allows users to create scalable data storage solutions in AWS?

Amazon S3 (Simple Storage Service) is the service that allows users to create scalable data storage solutions in AWS. S3 is designed for high availability and durability, enabling businesses to store and retrieve any amount of data from anywhere on the web. Its highly scalable architecture automatically manages storage according to the user’s needs, from small to petabyte scale, without requiring any upfront capital investment. This makes it an optimal choice for a variety of data types, whether it's structured, semi-structured, or unstructured.

The service provides features like data versioning, lifecycle management, and access control, which enhance its usability for large datasets. S3 also integrates seamlessly with various AWS services, facilitating data analytics, machine learning, and big data processing tasks, which further emphasizes its role as a scalable storage solution.

While other services listed offer storage capabilities, each has specific use cases that don't match the criteria of creating a fully scalable storage solution in the same broad sense as S3. For example, Amazon EBS (Elastic Block Store) is used primarily for block storage for EC2 instances and is limited to that specific use case. Amazon FSx provides file systems for Windows or Lustre, which is ideal for specific workloads but not as universally scalable as S3