Modules are add-ons that contains configurations, code functionalities and data. Although modules can be private, public or both, this does not restrict users / developers to tap into these resources outside of their respective modules.
Module Data is simply the data stored within a module which are accessible across your instance as long as proper reference and parameters are used.
To note, it is always up to the module publishers (ie. Insites) which data / configurations are their intellectual property (IP).
Scope and Limitations
How to access data within modules such as Insites modules How to CRUD data within modules
This guide does not include teaching anything about platformOS structure, liquid, graphQL, any programming languages and/or other functionalities within platformOS. This guide does not state any specific codes, tools or practices to be used to access and/or manipulate module data.