Hi Zoran, AWS charges on a utility basis for our infrastructure and platform services. However, we do have a free tier which is described at http://aws.amazon.com/free We also have a education/research grant program that may be of interest. It is described at http://aws.amazon.com/education Thanks, Jamie Kinney Solution Architecture - Worldwide Public Sector Amazon Web Services E: [log in to unmask]<mailto:[log in to unmask]> M: 206 265-9439 [cid:2462F52F-EFFC-434D-B92F-5CBE25D19D88] twitter.com/awscloud On May 3, 2012, at 2:15 AM, Zoran Ovcin wrote: On 5/3/2012 10:56 AM, Jamie Kinney wrote: I have created a Scientific Linux 6.2 x86_64 Amazon EC2 machine image (AMI) and would welcome your feedback. The AMI currently resides in the us-east-1 (Northern Virginia) Amazon EC2 region. If there is enough interest, I could easily publish this AMI to all AWS regions. The AMI is ami-e2a0058b. https://console.aws.amazon.com/ec2/home?region=us-east-1#launchAmi=ami-e2a0058b Feel free to contact me directly with any questions/comments. Best regards, Jamie Kinney HPC/Big Data Solution Architect - Amazon Web Services [log in to unmask]<mailto:[log in to unmask]> I never tried using AWS. Before creating the account, I read The Terms of Agreement. Could not understand: is the use of AWS free or is it going to be charged? Zoran -- Zoran Ovcin, University of Novi Sad Faculty of Technical Sciences Serbia, +381-(0)21-485-2298, mailto:[log in to unmask]