If we're close to splitting hairs though, users includes everyone who ever hits any of its endpoints. It doesn't matter who has credentials - the license does n

If we're close to splitting hairs though, users includes everyone who ever hits any of its endpoints. It doesn't matter who has credentials - the license does not discuss "customers" and "non-customers". It says: The GNU Affero General Public License is designed specifically to ensure that, in such cases, the modified source code becomes available to the community. It requires the operator of a network server to provide the source code of the modified version running there to the users of that server. Therefore, public use of a modified version, on a publicly accessible server, gives the public access to the source code of the modified version. If someone can reach the server, you agree to give them source for everything involved in that servers operation that is covered under "corresponding source". That includes linked, executed and networked programs that integrate with any custom patches to provide features: For example, Corresponding Source includes interface definition files associated with source files for the work, and the source code for shared libraries and dynamically linked subprograms that the work is specifically designed to require, such as by intimate data communication or control flow between those subprograms and other parts of the work.