title: How many Google Maps API Keys do I need?
body: <h2>The Issue</h2>
  
  <p>I haven't actually seen this question addressed adequately anywhere.</p>
  
  <p>I'm using a WordPress plugin that requires a Google Maps API Key. What I'm wondering, is can I use one API Key for all the websites and applications that I manage or do I need a separate API key for each property or app?</p>
  
  <p>For instance, I was pleased to find that I only need one Google Webmaster Tools account which I can use to manage ALL my websites, including ones I've made for an am managing for others.</p>
  
  <p>However, <strong>with Google Maps it's not that clear</strong>. Do I need a separate API Key for every application I make?</p>
  
  <h2>Where I've Looked For Answers So Far:</h2>
  
  <ul>
  <li><a href="https://stackoverflow.com/questions/39102378/how-google-maps-api-keys-work">How Google Maps API Keys work</a></li>
  <li><a href="https://stackoverflow.com/questions/38153734/do-i-need-to-hide-api-key-when-using-google-maps-js-api-if-so-how">Do I need to hide API key when using google maps js API? If so, how?</a></li>
  <li><a href="https://stackoverflow.com/questions/26677338/multiple-google-maps-api-keys">Multiple Google Maps API keys</a></li>
  </ul>
  
  <p>What I've pulled from those posts is that you can have multiple API keys, but you don't need <em>any</em> API keys, but there are many different <em>flavors</em> of Google Maps API keys (huh?) ... it's a bit confusing.</p>
  
  <h2>My Question</h2>
  
  <p>If I am making a website for clients A, B, &amp; C does "client-a.com" need a different API Key than "client-b.com"?</p>
  
  <h2>Note</h2>
  
  <p>This question is not just about Google Maps, but that was the actual API that brought the confusion about.</p>