Free space: 5Gb!!
Paid plans: from $0.03 per GB / month

Brief overview

Amazon S3 (Simple Storage Service) is an online file storage web service offered by amazon Web Services. They provide this for developers and computer teams with secure, durable, highly-scalable object storage. Amazon S3 is known as being easy to use and implement with a simple web services interface to store and retrieve any amount of data from almost anywhere on the web. The Amazon Simple Storage Service (Amazon S3) is a scalable, high-speed, low-cost Web-based service designed for online backup and archiving of data and application programs. According to the Amazon Web services pages, the S3 was intentionally designed with a minimal feature set and was created to make Web-scale computing easier for developers.

Amazon S3 Limits:

Max file size: 5 Tb

Pricing

5 Gb Free
First 1 TB : $0.0300 per GB / month
Next 49 TB : $0.0295 per GB / month
Next 450 TB : $0.0290 per GB / month
Next 500 TB : $0.0285 per GB / month
Next 4000 TB : $0.0280 per GB / month
Over 5000 TB : $0.0275 per GB / month