Chapter 4

1. provides developers and IT teams with secure, durable, highly-scalable object storage. Amazon S3 is easy to use, with a simple web services interface to store and retrieve any amount of data from anywhere on the web.

   Annotations:

   • a safe place to store your file
   • object-based storage
   • The data is spread across multiple

Annotations:

• Object-based (allows you to upload files)
• Files can be from 0 Bytes to 5TB
• There is unlimited storage
• Files are stored in buckets (similar to folder)
• S3 is a universal namespace. Name must be unique globally
• When you upload a file to S3, you will receive a HTTP 200 code if the upload is successful

Annotations:

• Read after write consistency for PUTS of new Objects
• Eventually Consistency for overwrites PUTS and DELETES (can takes some time to propagate)

1. Object Consist of the following:

   Annotations:

   • Key - name of the object
   • Value - data
   • Version ID - important for version control
   • Metadata - data about data that is stored
2. Built for 99.99% availability for the S3 platform
3. Amazon guarantee 99.9% availability