That’s all.
You too can have transactions if you implement your access layer appropriately.
It’s a useful format, but let’s note pretend it’s any more magic than it actually is. I’ve also not noticed any improved performance above what partitioning would give you.
It's not magic, and you can understand what the _delta_log is doing fairly easily, but I can testify that the performance improvement over partitioning can be achieved.
Yes, we can all "just" make it ourself, still nice when others make it.
Personally I very much like that it's conseptually easy and that it builds on an open source format (parquet). I also expect there to be a dragons, both small and large, in actually getting the acid stuff right,so I am happy we can fight them together.
Regarding “that’s all” - can you give an estimate how much time it will take to reimplement it from scratch on multiple cloud platforms?