Please feel free to add anything you didn't understand at some point here:
- GBFS: General Bikeshare Feed Specification
- GTFS: General Transit Feed Specification
- GTFS-RT: The realtime counterpart of GTFS
- NeTEx: Network Exchange specification (French resource)
- (Data) Schema: a way to describe data structures
- SIRI: Service Interface for Real time Information (French resource)
- udata: in this codebase, refers to the udata platform running data.gouv.fr