Integrating with Amazon S3 for fun, profit, and epic speed boosts.
The benefits of using Amazon S3 to store static resources is already well documented. It’s almost a no-brainer if you are building an app that hosts a lot of static files.
We just converted an app that we’re working on to use S3 for all user uploads. It not only sped up our development time, it also basically eliminated the need to worry about file-server scaling in our prototyping stage. And we may not need to worry about it for a quite a while after that.
Check out http://getcloudfusion.com/ for more information on the Amazon S3 SDK for PHP.