ironment to
merely test it, so you just build your service and run it immediately on your
local computer.</p><p>This module covers the different aspects involved in developing a single service
on a local machine. You don&rsquo;t need to write code though. Instead, you build,
run, and test an existing service: <code>ratings</code>.</p><p>The <code>ratings</code> service is a small web app written in
<a href=https://nodejs.org/en/>Node.js</a> that can run on its own. It performs similar
actions to those of ot