DNS

Articles on DNS. From how it works to operations and troubleshooting, the series explains it step by step.

DNS Fundamentals (12 parts)
From How Name Resolution Works to Design and Troubleshooting

[DNS Fundamentals Part 1] What Is DNS? How Name Resolution Works and Its Three Key Players

Web browsing, email, and cloud services all start with DNS. This article explains how DNS grew out of the hosts file, the two steps of every connection, the three key players (stub resolver, caching DNS, authoritative DNS), and the flow of a single lookup. Part 1 of a 12-part series.