Is it clear that each OpenStack service providers its own API?

[flozanorht]

Check that it is explicit that each service (nova, cinder, etc) providers their own API entrypoints and API resource types. That relationship and mapping is not clear from the OpenStack client and Horizon.

The CLI docs provide a file listing on the "command_objects" folder which would provide an overall list of API resource types but I cannot find a nice-looking, proper index page of them to refer students to.
https://docs.openstack.org/python-openstackclient/latest/cli/command-objects/

The list from Heat may act as a proxy, but them there's no mapping to the openstack client commands and not all API resource types are supported by Heat
https://docs.openstack.org/heat/latest/template_guide/openstack.html