These types of services are mostly not aimed at established tech shops. Similar to Wix or Squarespace or Appian, if you already have an in house tech team, you don't need this, probably.

But if you're just starting out, with a small and quite possibly partly outsourced team, this could be a cheaper and faster way to spin things up. Just like many companies don't have their own datacenter anymore, and even fewer have them literally onsite in a server closet.