Computer Configuration > Administrative Templates > Microsoft Edge
Both
HKLM\Software\Policies\Microsoft\Edge
OBSOLETE: This policy is obsolete and doesn't work after Microsoft Edge 126. Lets Microsoft Edge browser enable Follow service and apply it to users. Users can use the Follow feature for an influencer, site, or topic in Microsoft Edge.. If you enable or don't configure this policy, Follow in Microsoft Edge can be applied. If you disable this policy, Microsoft Edge will not communicate with Follow service to provide the follow feature. This policy is obsolete after version 126.