Transcribed

Azure DNS - Simply Explained

Jul 18, 2026 · 15m 53s
Azure DNS - Simply Explained
Description

Everyone uses DNS, but few people understand the chain behind a lookup or how Azure takes over the job. This episode explains Azure DNS for cloud admins and beginners: public...

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Everyone uses DNS, but few people understand the chain behind a lookup or how Azure takes over the job. This episode explains Azure DNS for cloud admins and beginners: public and private zones, the record types you actually need, delegation and virtual network links. You will know how to move a domain to Azure DNS without breaking your website or email.

In this episode
  • 00:00 – Intro
  • 00:54 – What DNS actually does
  • 02:14 – What is Azure DNS?
  • 03:28 – Public vs. private DNS zones
  • 05:42 – Record types you'll actually use
  • 08:30 – Delegation
  • 10:51 – Private DNS and virtual network links
  • 13:17 – Security, monitoring and best practices

Key takeaways
  • Azure DNS is a managed hosting service for DNS zones, so you no longer run, patch or scale your own DNS servers.
  • Public zones serve names to the internet and require delegation at your registrar, while private zones resolve only inside the virtual networks you link to them.
  • Use alias records for Azure resources and recreate every existing record in Azure before switching name servers to avoid outages.

Worth quoting

“Computers live on numbers, we live on names, and DNS sits right in the middle, making the translation.” – Mirko Peters (00:23)

“So Azure DNS is Microsoft's managed DNS hosting service. In plain English, that means you never have to run your own DNS servers, patch them, or plan for higher availability.” – Mirko Peters (02:15)

Explore more on M365.FM
  • Episode page: the full episode with chapters, quotes and FAQ on Azure DNS
  • Azure DNS – the subject of the episode: public and private zones, alias records, delegation and vnet links
  • Microsoft Azure – the platform hosting the DNS zones on Microsoft's global infrastructure
  • Microsoft Defender – Microsoft Defender for Cloud can block resolution of known malicious domains
  • Microsoft 365 – used as an example: setting it up requires a TXT record to verify your domain
  • Mirko Peters – hosts the episode and walks through DNS lookups, zones, records and delegation
  • Related episode: Azure Private Link - Simply Explained

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Information
Author Mirko Peters M365, Azure & AI
Organization m365 FM
Website www.m365.fm
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