f the <code>reviews</code> microservice:</p><ul><li>Version v1 doesn&rsquo;t call the <code>ratings</code> service.</li><li>Version v2 calls the <code>ratings</code> service, and displays each rating as 1 to 5 black stars.</li><li>Version v3 calls the <code>ratings</code> service, and displays each rating as 1 to 5 red stars.</li></ul><p>The end-to-end architecture of the application is shown below.</p><figure style=width:80%><div class=wrapper-with-intrinsic-ratio style=padding-bottom:68.52267488872263%><a