The Windows Customer Experience Improvement Program must be disabled.
Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Turning off this capability will prevent potentially sensitive information from being sent outside the enterprise and uncontrolled updates to the system.
This setting ensures the Windows Customer Experience Improvement Program is disabled so information is not passed to the vendor.
How this relates to the STIG checklist: STIG vs SCAP benchmark.