One reason I'm excited about this is that it appears to let you write arbitrary routing logic into a layer 7 proxy. This is something we had to build for https:

One reason I'm excited about this is that it appears to let you write arbitrary routing logic into a layer 7 proxy. This is something we had to build for https://plane.dev https://plane.dev and it would have been nicer to use something like this, but we couldn't find anything like it at the time.