The combination of this HTTP Load Balancing announcement, and May 23rd's announcement of CoreOS support are super exciting. I've been working on setting up a similar docker-based multi-AZ autoscaling setup on EC2, but getting it up and running has required integrating a lot of separately moving parts. If Google can simplify this process via a few simple gcutil commands and a cloud-config YAML file, it would be a hugely compelling offering.