"The GNU General Public License permits making a modified version and letting the public access it on a server without ever releasing its source code to the public.
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."
Yes it does, but AGPL licenced software is super banned at all major companies because it is very viral. You have to make derivative software available under AGPL even if the end user accesses it only over a network.
It does, but there are conditions that apply. Some companies don't like going that route - which in my opinion is not a thing, but I can't understand the concern.
"The GNU General Public License permits making a modified version and letting the public access it on a server without ever releasing its source code to the public.
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."
[0] https://www.gnu.org/licenses/agpl-3.0#preamble