Amazon S3
Amazon S3 (Simple Storage Service) is a scalable object storage service provided by Amazon Web Services (AWS) that allows users to store and retrieve any amount of data from anywhere on the web. It is designed for 99.999999999% (11 9's) durability and offers features like versioning, lifecycle policies, and encryption. S3 is commonly used for data backup, static website hosting, big data analytics, and as a data lake foundation.
Developers should learn Amazon S3 when building cloud-native applications that require reliable, scalable, and secure storage for unstructured data such as images, videos, logs, or backups. It is essential for use cases like serving static assets for web applications, storing data for machine learning pipelines, or implementing disaster recovery solutions due to its high availability and integration with other AWS services.