How can an organization compare the cost of running applications in an on-premise or colocation environment against the AWS cloud?

The TCO calculator is a free tool provided by AWS that allows you to estimate the cost savings of using the AWS Cloud vs. using an on-premised data center.The TCO calculator can compare the cost of your applications in an on-premises or traditional hosting environment to AWS. You describe your on-premises or hosting environment configuration to produce a detailed cost comparison with AWS.