Requirements
You will need to set allow_url_fopen in your PHP settings. This option enables the URL-aware fopen wrappers that enable accessing remote objects like files.

Known Issues
Some curl libraries, such as the one bundled with MAMP, do not come with authoritative certificate files. http://dev.soup.io/post/56438473/If-youre-using-MAMP-and-doing-something

Installation
- Download and install the Libraries (7.x-2.x branch) and AWS SDK modules
http://drupal.org/project/libraries
http://drupal.org/project/awssdk
(For installation of awssdk, you will need to download the Amazon SDK for PHP and place it in sites/all/libraries/awdsdk )
http://aws.amazon.com/sdkforphp/

- Configure AWS SDK (using either the AWS SDK for PHP UI module, or storing the settings in your settings.php file's $conf array).

- Configure your bucket setttings at /admin/config/media/amazons3

- Refresh your file metadata cache using the button at the bottom of /admin/config/media/amazons3

You can then:
- Visit admin/config/media/file-system and set the Default download method to Amazon Simple Storage Service
and/or
- Add a field of type File or Image etc and set the Upload destination to Amazon Simple Storage Service in the Field Settings tab.
