An S3 bucket is a public cloud storage resource available in Amazon Web Services (AWS) Simple Storage Service (S3) platform. It is a container for objects stored in Amazon S3, and it provides object-based storage where data is stored inside S3 buckets in distinct units called objects instead of files. Each object has three main components: the objects content or data, a unique identifier for the object, and the descriptive metadata, including the objects name, URL, and size. An object must exist within a bucket, as it cannot exist alone. Each Amazon account can have hundreds of buckets, and within each bucket, there can be hundreds of objects.

S3 buckets are mainly used to help individuals and enterprises meet their data storage, backup, and delivery needs in the cloud. They are designed for 99.999999999 percent durability and provide easy management features to organize data for websites, mobile applications, backup and restore, and many other applications. S3 buckets are used for a variety of use cases, including data lakes, dynamic websites, mobile applications, backup and restore operations, big data analytics, user-generated content, storage archives, enterprise applications, and IoT devices.

To use an S3 bucket, you must first create a bucket in the region of your choice, and the bucket must be given a globally unique name. After creating a bucket, you must choose your S3 storage class for data storage. Amazon S3 supports a variety of configuration options for buckets, and you can configure a bucket for website hosting, add a configuration to control the object lifecycle in the bucket, or configure the bucket to record all.

Access to S3 buckets and objects is controlled through a combination of policies and permissions. You can use bucket policies, AWS Identity and Access Management (IAM) policies, access control lists (ACLs), and S3 Access Points to manage access. A bucket policy is an IAM policy where you can allow or deny permission to your Amazon S3 resources. You can add a bucket policy to a bucket to grant other AWS accounts or IAM users access permissions to the bucket and the objects inside it[[4]](https://blog.lightspin.io/how...