 task shows you how to gradually migrate TCP traffic from one version of a
microservice to another. For example, you might migrate TCP traffic from an
older version to a new version.</p><p>A common use case is to migrate TCP traffic gradually from one version of a
microservice to another. In Istio, you accomplish this goal by configuring a
sequence of rules that route a percentage of TCP traffic to one service or
another. In this task, you will send 100% of the TCP traffic to <code>tcp-echo:v1</code>.
Then,