A container that provides namespace, access control and aggregation of
S3Objects
Every object stored in Amazon S3 is contained in a bucket. Buckets partition the namespace of
objects stored in Amazon S3 at the top level. Within a bucket, you can use any names for your
objects, but bucket names must be unique across all of Amazon S3.
Buckets are similar to Internet domain names. Just as Amazon is the only owner of the domain name
Amazon.com, only one person or organization can own a bucket within Amazon S3. Once you create a
uniquely named bucket in Amazon S3, you can organize and name the objects within the bucket in
any way you like and the bucket will remain yours for as long as you like and as long as you have
the Amazon S3 identity.
The similarities between buckets and domain names is not a coincidence there is a direct mapping
between Amazon S3 buckets and subdomains of s3.amazonaws.com. Objects stored in Amazon S3 are
addressable using the REST API under the domain bucketname.s3.amazonaws.com. For example, if the
object homepage.html?is stored in the Amazon S3 bucket mybucket its address would be
http://mybucket.s3.amazonaws.com/homepage.html?