Koen Verbeeck maximizes the savings:
As you might’ve noticed, pricing in ADF is not the same as it was in SSIS for example. In SSIS, you pay your SQL Server license and you’re done (well, and you buy a server to run it on). It doesn’t matter what you do with SSIS, the cost is the same. If you run 1 package or 1000 packages, there’s no difference except in your electricity bill. However, in ADF you pay more if you use it more. You pay for each action you do, you pay for each activity you use and for how long things are running. There are a couple of guidelines you can follow to try to minimize costs:
Read on for those guidelines and some specific helpful items.