In particular the method of creating concrete piles(sp?).
These are for garden rooms, so I would expect that for a shed you could definitely diy a less hardcore version.
I mentioned it because this style of a series of independent footings is the sort of thing people do with tree houses where there are lots of trees and roots around.
Have a look at ecobases.
Since being introduced to Newpipe, I'm back on YT binge sessions and have got really into this guy:
https://www.youtube.com/watch?v=3BE36bi1mKg
In particular the method of creating concrete piles(sp?).
These are for garden rooms, so I would expect that for a shed you could definitely diy a less hardcore version.
I mentioned it because this style of a series of independent footings is the sort of thing people do with tree houses where there are lots of trees and roots around.