You have an Azure Active Directory (Azure AD) tenant named contoso.com and an Azure virtual network named VNET1.
To VNET1, you deploy an Azure Active Directory Domain Services (Azure AD DS) managed domain named litwareinc.com.
To VNET1, you plan to deploy a Azure Virtual Desktop host pool named Pool1.
You need to ensure that you can deploy Windows 10 Enterprise session hosts to Pool1.
What should you do first?