title: Understanding different website URLs
body: <p>I am confused as to how, for example, this page is loaded. I am looking at the navigation bar in my browser and it says:</p>
  
  <pre><code>stackoverflow.com/questions/ask
  </code></pre>
  
  <p>I am used to seeing this for the pages I develop:</p>
  
  <pre><code>Example.com/ask.php
  </code></pre>
  
  <p>Why does their URL not contain page names or values? Or does it? If so, how.</p>
  
  <p>Thanks.</p>