Yeah, but they only allow you to route via path matching right now. The ALB has access to the headers, but configuring it based on arbitrary headers isn't exposed to end users yet.

I excitedly set up an ALB as soon as I read the post, because I've needed it, only to find that support for what I want isn't available to me yet!

The article actually just states that layer 7 load balancers have access to the header information and typically allow you to route based on those headers. ALB, however, doesn't :(

Weird thing to highlight when the product being announced doesn't even have that feature.