I don’t have Akmai Net Session, but I don’t think that matters, because Adobe, Microsoft, and Mozilla use it for downloading and updating. This can be seen in Network Connections in Avast. Akamai is allowed a connection for both Microsoft and Mozilla. I have Adobe blocked, but if I enabled it, a connection for Akamai would also show up there.

I’m going to turn off all automatic and streaming updates, and see it there is a drop in the numbers of hits on the firewall by Akamai.