There are lots of different practices/cultures within the organics "realm".
What they all have in common is what you clearly already know: you want microbial-fungal activity interacting with the plant.
So you want a good soil with energy, minerals, biology and micros. Here's a good read, although these guys also use some salts:
The Four Bases of Mineralized Soil--The Optimum Food Supply for People and Animals Should Be Grown On Mineralized Soil. This Type Of Soil Isn’t to be Found—It I
foliarsprays.com
To keep it simple, i believe that an amended soil with a few top dressings (maybe even not needed) could be the simpler way to go if you want to try organics.
Having a bottle of fish and/or kelp based fertilizer is always a good tool for your box. Quality EWC is also something you must have.
You can remix the soil batch after every harvest, adding some EWC and some ferts, like it's done in ROLS.
You can do no-till.
You can go with KNF or JADAM practices, where homemade liquid inputs are used, from fertilizers to bio-stimulants.