DNS stands for domain name system. This is the naming system that maps the entire internet. It associates information with domain names. More specifically, DNS specifies mappings between numerical IP addresses and domain names.

Most engineers know these basic facts about DNS, but they may not know how much engineering a complex company like Etsy or Zappos puts into their DNS configuration. Dynamic DNS allows for intelligent response, so that a resource is served from the most efficient place–even in the face of a DDoS attack, or just routine failure of cloud servers.

Phil Stanhope is the VP of technology at Oracle Dyn and he joins the show to explain how modern DNS works and the role of a DNS provider. Full disclosure: Dyn is a sponsor of Software Engineering Daily.

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