During private and public preview the service was named Windows Upgrade Analytics. With its release to productive state it was renamed to Windows Upgrade Readiness. This new service is available to enterprise environments that makes use of the telemetry feature of Windows. While some view telemetry as a spying or data collection problem, Microsoft shows that they are using the data to improve Windows while at the same time helping organizations upgrade to Windows 10. The analytics features will work on Windows 7 and preceding hosts and allow the enterprise to gauge what hardware needs to be replaced before making the move to Windows 10. A detailed write-up of the service offered can be found in this article: https://docs.microsoft.com/en-us/windows/deployment/upgrade/manage-windows-upgrades-with-upgrade-readiness.