r propagation overhead.</div></aside></div><h3 id=step-3-allowing-access-to-the-ratings-service>Step 3. allowing access to the <code>ratings</code> service</h3><p>We will create a policy to allow the <code>reviews</code> service to access the <code>ratings</code> service. Note that in the
<a href=#before-you-begin>setup step</a>, we created a <code>bookinfo-reviews</code> service account for the <code>reviews</code> service. This
service account is the authenticated identify for the <code>reviews</code> ser