Most content websites that are managed by a organisation such as a council/government or are usually driven by some CMS software. Updates are usually done by a content/social media team. These people are also posting the updates to twitter.

It isn't the late 90s/2000s anymore where people are uploading HTML files over FTP.

If our governments can't update an HTML page same way they update a twitter status then we are all doomed and should just nuke ourselves to get it over with.

Every city and town has a website with information on services and paying taxes. They usually use a third party payment system in my experience, but the main site is theirs and they still use shitter and bookface.