Howdy,
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This view point I offer is my own personal
opinion and may not reflect the views of cPanel.
Services like EasyDNS are great when you have website content up and online in several geographical locations. You let them do the DNS work and you host your website data around the world. But if you're like most companies you only have each website hosted in one location. If that location goes down, it isn't going to be online anywhere else in the world. DNS will still work, but will point to an IP that isn't online. Since you have this single point of failure you can start scaling up and providing websites on other servers or host your own DNS, something I recommend everyone anyhow.