DNS in Plain English
I've helped many people change their DNS settings when they move hosting companies. It's not hard. Yet, the acronym "DNS" scares people. Many people automatically shut off their "I'm going to try and understand this" caps when they hear a term like "DNS". It's really a simple concept, though.
And here's a perfectly simple explanation. Taken from an email from Mike Volpe, a marketing guy:
If you move to a new website, there is a one time DNS change. This is unavoidable. DNS stands foir "Domain Name Server" and it is the part of the internet that matches up the domain (like hubspot.com) with the address of the computer where the website actually lives (like 192.255.032.876). It is sort of like telling people your new address if you move, but it is actually easier and more centralized.
Perfectly stated. You have no excuse now. If someone says "DNS" you should know what they mean.