title: what does "managed" mean in Azure?
body: <p>I was reading an article on Azure Firewall.  It says</p>
  <blockquote>
  <p>Azure Firewall is a managed, cloud-based network security service that protects your Azure Virtual Network resources.</p>
  </blockquote>
  <p>The word &quot;managed&quot; pops up in many articles on Azure resources but I have no idea what it mean.  What does it mean?</p>