 match:
    - headers:
        cookie:
          regex: &#34;^(.*?;)?(user=jason)(;.*)?$&#34;
    route:
    - destination:
        host: reviews
        subset: v2
  - route:
    - destination:
        host: reviews
        subset: v1
</code></pre><p>As you can see, both of the rules for the <code>reviews</code> service are consolidated in one place, which at first may or may not
seem preferable. However, if you look closer at this new model, you’ll see there are fundamental differences that make
<code>v