to break it down, you can compare the cloud tier as nothing else but an 'active tier with access restrictions'. It will use DDBoost - there is no other way.  
wanting to know how we and config cloud storage to use ddboost,when we configure cloud tier at DD system, at the assessment stage if we choose the first option that mean that cloudstorage will use DDboost by default? or is there another way. [IMAGE] 
how to configure a cloud storage to use ddboost in DD system.