Unlimited online file storage in the cloud.

Common Use Cases

• Backup and disaster recovery
• Archiving old data at low cost
• Hosting static websites (HTML, CSS, JS)
• Storing media files (images, videos, audio)
• Data lakes and big data analytics
• Application assets and software delivery

Buckets

A bucket is a container that holds your files. Think of it as a top-level folder.

Key facts:

• Name must be globally unique across all AWS accounts and regions
• Created in a specific region — data stays there unless you move it
• S3 console shows all buckets globally but each bucket lives in one region

Naming rules:

• 3 to 63 characters
• Lowercase letters and numbers only — no uppercase, no underscores
• Must start with a letter or number