1><div class=post-date><p>May 26, 2021</p></div><div><h4 class=post-title>Safely upgrade the Istio control plane with revisions and tags</h4><p class=post-summary>Learn how to perform canary upgrades of your mesh control plane.</p><p class=post-author>By Christian Posta - Solo.io, Lin Sun - Solo.io, Sam Naser - Google</p></div></a><a class="post-card tf-filter-item" href=/v1.25/blog/2021/istio-4th-birthday/ data-years=2021><div class=post-date><p>May 24, 2021</p></div><div><h4 class=post-title>Happy Birthda