s3bucketnameinputdatacsv

An S3 bucket name is the unique identifier used to address a bucket in Amazon S3. Bucket names are globally unique across all AWS accounts and regions, so once a name is taken it cannot be used by anyone else in the world.

Naming rules and constraints include a length of 3 to 63 characters, and allowed characters are lowercase letters, numbers, and hyphens. Names must start with a letter or a number and cannot end with a hyphen. They must not be formatted as an IP address. Underscores, spaces, and uppercase letters are not permitted, and while dots are allowed, they can complicate certain TLS and DNS configurations.

URLs for accessing buckets are typically in virtual-hosted–style form, such as https://bucket-name.s3.Region.amazonaws.com/object, where the bucket name becomes part of the domain name. Path-style URLs have become deprecated in many regions, so virtual-hosted access is preferred. The bucket name’s DNS compatibility is important because it influences how the endpoint resolves and validates TLS certificates.

When designing a bucket name, consider stability and future use. Avoid embedding sensitive information, and use a clear, descriptive pattern such as company-project-environment. Many organizations use hyphen delimiters to separate components (for example, acme-sales-prod). If a name includes dots, be mindful of wildcard SSL certificates and DNS implications.

Management and access controls are handled separately: bucket policies and IAM permissions govern who can read or write to the bucket, while replication, versioning, and lifecycle rules manage data lifecycle within the bucket.