Is Microsoft Edge Legacy still being maintained? I was under the impression Edgium is the maintenance per se, and would just be deployed through Windows Update

Is Microsoft Edge Legacy still being maintained? I was under the impression Edgium is the maintenance per se, and would just be deployed through Windows Update to all Edge users. If we're including unmaintained Microsoft browsers there's also the old Tasman-based IE for Mac. The Expression Web product also had an independent HTML rendering engine.