It's also missing a lot of important functionality if you are trying to implement anything other than the basic case. A perfect example would be the difference

It's also missing a lot of important functionality if you are trying to implement anything other than the basic case. A perfect example would be the difference between GCE networking and AWS VPC. GCE networks support routes with priorities and if you insert multiple routes into the routing table with equal priorities it does what you would expect, equal cost multi-pathing. This makes it really easy to implement proper scalable NAT for private instances, which is just pure pain in AWS VPC. There are many more examples of this and AWS is not the only culprit, both GCE and Azure have either missing features or mis-features that make me want to flip a desk sometimes.