Register the host header of sharepoint web application in DNS Server

Create a web application using central administration or using Powershell if not created.

Connect to DNS Server

Go to your domain name in the explorer: somedomain.com and right-click on it.

Click New Host (A or AAA)

Enter the Name and IP Address

Go to IIS Manager -> Select Web application -> Right click + Edit Binding -> Edit -> Enter IP Address and Host Name

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