title: what is difference between www vs www1, www2, www3 etc
body: <p>Does it mean that user requests directing to the different servers? </p>
  
  <p>I usually see it on websites with high traffic.</p>
  
  <p>for eg:-  <a href="https://www.tcs.com/" rel="noreferrer">https://www.tcs.com/</a></p>
  
  <pre><code>      https://www2.deloitte.com/
  </code></pre>