AWS Route 53 Explained: DNS Basics, Hosted Zones, Routing Policies and Resolvers

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A systems engineer transitioning to cloud and DevOps has published a detailed technical guide covering AWS Route 53 and its core DNS concepts. The guide explains how DNS translates human-readable domain names into IP addresses, walking through each step from browser cache lookup to authoritative server response. It covers Route 53's role as AWS's fully managed DNS service, including public and private hosted zones, record types, and the significance of TTL in managing IP change propagation. The article also addresses all eight Route 53 routing policies, traffic policies, and resolver endpoints for hybrid AWS and on-premises environments. Topics such as split-horizon DNS, inbound and outbound resolver endpoints, and DNS forwarders are included alongside interview questions and hands-on practice tasks.

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