They have had "edge workers" in some form or another for 20 years. Most of the common use cases for things you'd want to do at the edge could be done in their config programming language. Now they have VMs/containers in 15k+ locations.

Yes

You can do most thing with configuration. EdgeWorkers are also available if you want to run your own JS at the Edge https://developer.akamai.com/akamai-edgeworkers-overview