Many Azure Active Directory (Azure AD) services require you to license each of your users or groups (and associated members) for that service. Only users with active licenses will be able to access and use the licensed Azure AD services for which that's true. Licenses are applied per tenant and do not transfer to other tenants.
Not all Microsoft services are available in all locations. Before a license can be assigned to a group, you must specify the Usage location for all members. You can set this value in the Azure Active Directory > Users > Profile > Settings area in Azure AD. Any user whose usage location is not specified inherits the location of the Azure AD organization.
You can add the licensing rights to users or to an entire group. Check the reference link for the steps.

The Set-AzMarketplaceTerms cmdlet saves the terms object for given publisher id(Publisher), offer id(Product) and plan id(Name) tuple.
Reference:
https://docs.microsoft.com/en-us/powershell/module/az.marketplaceordering/set-azmarketplaceterms?view=azps-4.5.0

1. View template from deployment history
Go to the resource group for your new resource group. Notice that the portal shows the result of the last deployment. Select this link.

2. You see a history of deployments for the group. In your case, the portal probably lists only one deployment. Select this deployment.

The portal displays a summary of the deployment. The summary includes the status of the deployment and its operations and the values that you provided for parameters. To see the template that you used for the deployment, select View template.

Reference:
https://docs.microsoft.com/en-us/azure/backup/backup-configure-vault
https://docs.microsoft.com/en-us/azure/backup/backup-azure-backup-faq

An Azure AD DS DNS zone should only contain the zone and records for the managed domain itself.
A conditional forwarder is a configuration option in a DNS server that lets you define a DNS domain, such as contoso.com, to forward queries to. Instead of the local DNS server trying to resolve queries for records in that domain, DNS queries are forwarded to the configured DNS for that domain. This configuration makes sure that the correct DNS records are returned, as you don't create a local a DNS zone with duplicate records in the managed domain to reflect those resources.
To create a conditional forwarder in your managed domain, complete the following steps:
1. Select your DNS zone, such as aaddscontoso.com.
2. Select Conditional Forwarders, then right-select and choose New Conditional Forwarder...
3. Enter your other DNS Domain, such as contoso.com, then enter the IP addresses of the DNS servers for that namespace, as shown in the following example:

4. Check the box for Store this conditional forwarder in Active Directory, and replicate it as follows, then select the option for All DNS servers in this domain, as shown in the following example:

5. To create the conditional forwarder, select OK.
Name resolution of the resources in other namespaces from VMs connected to the managed domain should now resolve correctly. Queries for the DNS domain configured in the conditional forwarder are passed to the relevant DNS servers.
Reference:
https://docs.microsoft.com/en-us/azure/virtual-network/virtual-networks-name-resolution-for-vms-and-role-instances
https://docs.microsoft.com/en-us/azure/active-directory-domain-services/manage-dns