Thanks to everyone for their input!

It is currently looking like we are going to use FAT with wear levelling for the larger JSON style configurations and NVS for other configs which can change easily on the fly.

We thought about NVS, and it may be the right choice for some options, but we have to store some pretty large amounts of data, preferably in JSON format, so NVS isn't the right choice for the majority. But some things we can likely store in NVS.

Hello there! We are currently working on an industrial application using ESP-IDF and an ESP-32S3-WROOM-2 module. For this application we need to save some amount of data on the Chips flash itself, mostly configuration data and similar, rather than an external data store like an SD Card. We know we c...