Amazon does a very good job of reaching out to the tech community to promote their products. One offer that is many times overlooked is their Free Tier of Services. If you’re looking to test out AWS, or to build a prototype for your Startup this free tier may be a very good option.
The free services offered include not just EC2 Compute or S3 storage, but most everything including CloudFront CDN, Elastic Transcoder and SES Email Sending. The best part of this offer is that it’s not a 30 or 90 day trial, rather you simply receive a specific amount of resources per month for at least 12 months.
Check out the Free Tier from AWS here: http://aws.amazon.com/free/