# Subscribing to Sentieon Ready2Run workflows
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Sentieon Ready2Run workflows are subscription-based. When you run a Sentieon Ready2Run workflow for the first time in an account, Sentieon automatically creates a two-week evaluation license for your AWS account. The license is valid for all Sentieon Ready2Run workflows. After the evaluation period ends, you can request a permanent license or request an extension to the evaluation license.

Follow these steps to subscribe to the Sentieon Ready2Run workflows:
+ Find your AWS Canonical User ID by following [ these instructions](https://docs.aws.amazon.com/AmazonS3/latest/userguide/finding-canonical-user-id.html).
+ Send an email to the Sentieon support group (support@sentieon.com) to request a software license. Provide your AWS Canonical User ID in the email.