It is simple as this. Everyone can make a pizza, there are hundreds of recipes out there. However, most of us just go and order our favorite pizza without any hassle!
This is a service. It is important to note. So as said before it is quite simple - all that we do is pretty much out there and known to the public just with our own setup and of course our twists & turns.
We are simply providing this as a service and doing all the heavy lifting so you don't have to.
Here is a hint: It does involve usage of GSC (now it is back up) + a backup + we are developing new method as a backup for backup.
However, we are always testing and implementing new methods and doing our best to be one step ahead in order not to keep all eggs in one basket.