The Amazon AWS servers (Amazon Web Services Elastic Compute Cloud) and Cloudfront servers are used to store data that isn't included in Firefox because they are large or change content regularly. This is similar to CDN servers and allows to make updated data available to all supported Firefox versions. Google servers are mainly use for phishing protection (safe browsing) data.

ok, thanks

I'm old enough to not really be comfortable with something keeping a constant network connection when it's not needed. How can I stop this behavior?

I think I've found the answer on reddit

about:config

dom.push.enabled false dom.push.connection.enabled false

I think if firefox is using a push service there should an option to disable it even if it's only in about:policies

I have no issues with connections when needed to amazonaws or other cdn because I'm trusting mozilla, mostly. It's the always persistent connection when I've turned off everything that would need a push service.

I think I've found the answer on reddit

about:config

dom.push.enabled false dom.push.connection.enabled false

I think if firefox is using a push service there should an option to disable it even if it's only in about:policies

I have no issues with connections when needed to amazonaws or other cdn because I'm trusting mozilla, mostly. It's the always persistent connection when I've turned off everything that would need a push service.