AWS Application Discovery Service?
You can use the AWS Application Discovery Service to discover your on-premises servers and plan your migrations at no charge.
You only pay for the AWS resources (e.g., Amazon S3, Amazon Athena, or Amazon Kinesis Firehose) that are provisioned to store your on-premises data. You only pay for what you use, as you use it; there are no minimum fees and no upfront commitments.
Get started with AWS Application Discovery Services and create a free account