@kytta Necessary, but not sufficient, is that the website must have a clear link "here is where you can get the source code running this site".

This is what the #AfferoGeneralPublicLicense (#AGPL) requires: When the licensed work is presented for users to interact with, there must be a link right there on the page for them to get the entire corresponding source code.

That doesn't address whether it *is* the corresponding source code the site actually runs. But it's a necessary first step.