I'm curious if this will Convox to route to multiple services with just a single ALB instead of the historical default of 1 ELB per service. Would be a real cost savings for a micro-services architecture.
It should allow Convox to do that, yes. Although it doesn't appear (from the screenshots) that you can route by Host header, so you'd have to put all your services on the same hostname with different path prefixes to make it work.