AWS Free tier account
You can run for example a micro instance of a Linux or Windows Server machine on EC2, configured with 1GB of RAM, for 750 hours per month. That's an entire month of free, continuous CPU und SSD Disk usage.
Price 6$ per Account Paypal(Primary) & BTC Accepted
Featured in AWS
Here are Few Services of AWS you will be using. For example Amazon EC2, Amazon RDS, Amazon S3, Amazon CloudFront.