S3 is an object storage service offered by AWS that provides highly scalable, durable, and low-cost storage for storing and retrieving any amount of data from anywhere on the web. With features like versioning, lifecycle management, and access control policies, S3 is widely used for various use cases.
A video streaming company uses Amazon S3 for storing and distributing video content, but it also uses Azure Storage for hosting customer data (user preferences, subscriptions) due to Azure's integration with Microsoft products. The company leverages data replication across both AWS and Azure to ensure the availability of both videos and user data.