[recursivedoubts]

in the sense I'm using, an application is a single functional app: you wouldn't have two applications using a shared URL because that would break the uniform interface

you might have two separate apps that maintain their own hypermedia APIs and that, on the server side, then share a data API between each other

the idea is to take advantage of the uniform interface of a hypermedia APIs:

https://htmx.org/essays/hateoas/

but there is an assumption there that the server side gives a client a sensible representation of state