I am pretty disapointed by the limited use cases pictured in the article. I pinged the author without success. Check at bottom of ff4.org page 10 others. E.g

I am pretty disapointed by the limited use cases pictured in the article. I pinged the author without success. Check at bottom of ff4.org page 10 others. E.g : Deliver your product with toggles off on each node of your cluster and when all are ready : toggle on - no more inconsistency during release - no rollback as you simply toggle off if not working.....