Alice and Bob are both developers. While Bob is interested in creating a
delivery tracking module to trace the position of goods on the map,
Alice's task is to model the building and store IOT features and their
positions in order to select and monitor them graphically.
Both have in common that they are interested in the location of
geographical features. For this purpose, a coordinate reference system
(CRS) is used, either a local, regional or global system. They also intend
to have an API to request and return geometries using multiple CRS and not
just the default system (WGS84). Knowing that their use cases have
real-time constraints, and that the time required to complete a
transformation process is long, this adds a new layer of complexity.