Domain Name Server (DNS)
Every PC on the Internet is allocated a remarkable address, called an IP address.
When it comes to human being it’s hard to remember numbers as we visit as many as sites day by day. It is extremely hard to remember the IP locations. Words are simpler to recollect than series of numbers. This is the place space names come into the picture. When you visit a site, all you have to know is its URL. PCs recall numbers, and DNS encourages us change over the URL into an IP address that the PC can get it.
Its of at-most importance that your website DNS must resolve quickly and should not waste time which ultimately adds delay in you website load time.