This is a simple easy beginner recipe thats going to take your cakes and cupcakes to another level.  Its time to stop using American Buttercream thats way too sweet, Italian and Swiss buttercream is more on the difficult side takes more time to make, remember time is money. Whipped Buttercream is not stable enough. 
This buttercream recipe is delicious and stable takes only a few minutes and little to no attention from you. Step over to the Darkside remember time is money.