I was testing few Labs on Microsoft Azure active directory and wanted to create few Azure AD users for testing purpose. I have already installed az powershell module, In the below script when you supply password it has to be in securestring format. 

How to switch to other Azure AD tenant using PowerShell and Azure CLI
Powershell Azure Az module Install-Package cannot convert value 2.0.0-preview to type system.version 

#Secret Password
$secureStrPassword = ConvertTo-SecureString -String 'T0p$ecret!' -AsPlainText -Force

#Create User
New-AzADUser -DisplayName DemoUser -UserPrincipalName [email protected] -Password $secureStrPassword -MailNickname DemoUser -ForceChangePasswordNextLogin

If you want to create a user on the Azure Active Directory portal, you can follow below steps on the users | All Users click New user. Provide identity information and click create.

Below script creates bulk users, I am creating 5 users naming starting from User1 to User5 in serial. I am using foreach-object loop to create users.

#Secret Password
$secureStrPassword = ConvertTo-SecureString -String 'T0p$ecret!' -AsPlainText -Force

#Create User
1..5 | % {New-AzADUser -DisplayName "User$_" -UserPrincipalName "[email protected]" -Password $secureStrPassword -MailNickname "User$_" -ForceChangePasswordNextLogin} | Select-Object DisplayName, UserPrincipalName

This is the screenshot after creating bulk users in Azure Active Directory from PowerShell one-liner script.

This example is from Azure CLI command to create Azure AD user.

#Azure CLI command example to create Azure AD user
az ad user create --display-name 'Test User' --password 'T0p$ecret' --user-principal-name [email protected] --force-change-password-next-login true

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