'Mods' can also refer to a single large package that contains many separate addons. 'Mods' are often much larger, and sometimes only modify existing content that is already part of the basegame for Arma 3. 'Addons' are smaller files, that often introduce new items not already in the basegame for Arma 3. Though the terms are considered somewhat interchangeable by many people involved in the Arma 3 community, there does seem to be some accepted differences: Copy the Workshop content, and then upload it to the server.
Subscribe to them in the Workshop, let them download to your client, and then navigate to the local files for Arma 3 in Steam. The Workshop on Steam can also be used to acquire addons for your Arma 3 server. There are many sites where you can directly download addons for Arma 3, but one of the largest and most popular ones is, at
RAW Paste Data Where to Find Addons for Arma 3:
