A DNS Zone is basically a section of the Domain Name System (DNS) that contains information about a specific domain and how traffic for that domain should be routed.
It’s like a container that holds all the DNS records for a domain (or part of a domain), such as: A record → Maps a domain name (e.g., example.com) to an IP address.
CNAME record → Maps one domain name to another (e.g., www.example.com → example.com). MX record → Defines mail servers for email delivery.
TXT record → Stores text info, often for verification or security (like
SPF, DKIM).
STEP BY STEP GUIDE TO CONFIGURE AND CREATE DOMAIN NAME SYSTEM
STEP 1 On the Azure portal, search for and select Private DNS zones.
Select + Create and configure the DNS zone.
STEP 2 Create a virtual network link to your private DNS zone
In the portal, continue working on the private.contoso.com DNS zone.
In the DNS Management blade, select + Virtual network links.
Select + Add” and configure the virtual network link.
STEP 3 Create a DNS record set
In the portal, continue working on the private.contoso.com DNS zone.
In the DNS Management blade, select + Recordsets.
Notice that two A records have automatically been created for each of the virtual machines.
Select + Add and configure a record set. When finished select Add
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