Automated solution which offers an Azure AD Access review like user experience to get regular approval for guest accounts.

Notable features

• The 'Manager' attribute of your guest users get's automatically populated with the identity of the inviter
• All Azure AD app registration information is stored in Azure Key Vault
• Almost zero touch deployment with ARM templates
• You can integrate existing guest users into this solution by populating the manager attribute in Azure AD
• You can configure the approval frequency for guest accounts
• Approval frequency respects last approval date for each guest account

Prerequisites

• Azure Subscription
• Azure AD Audit & Sign-In Log forwarding to a log analytics workspace
• Azure AD App Registration
  • Required permissions: Directory.ReadWrite.All, AuditLog.Read.All

Post deployment steps

• Authorize 'Office 365 Outlook' API Connection in the Azure Portal with the Account you want to send your notification e-mails
• Create an action group for your log analytics workspace to trigger the Azure Function: 'PopulateGuestInviterAsManager'
• Add an alert rule to your log analytics workspace which triggers the action group

Query for the alert rule:

AuditLogs
| where OperationName == 'Invite external user' and Result == 'success'

Deployment via Az PowerShell

# Create new resource group
$rgName = "arg-guestreview-euw-tst-01"
$rgLocation = "West Europe"
New-AzResourceGroup -Name $rgName -Location $rgLocation

# Deploy ARM Template with app registration details in parameters.json file
New-AzResourceGroupDeployment -ResourceGroupName $rgName -TemplateFile "C:\Repos\GitHub\AzureADGuestManagement\03-LogicApp\template.json" -TemplateParameterFile "C:\Repos\GitHub\AzureADGuestManagement\03-LogicApp\template.parameters.json" -Verbose