The JSON exporter is a utility that will extract some information from a Sumo project.
A Digital Twin application starts with a Sumo model where inputs and outputs (charts, etc.) are defined. Then these parameters and variables need to be connected through the API to Python for example.
It was laborious to find the variable names by hand. So the JSON exporter takes all parameters that have been changed, all scenario inputs, and all charts, tables etc., and extracts the symbols into a .json file, making setting up a DT or a third party GUI much easier.