Find an Azure AD (Dynamic) group by a keyword in its membership query.

Find-AzureADDynamicGroupByQueryKeyword.ps1

<#
  .SYNOPSIS
  This oneliner will fetch all Azure AD Dynamic Membership groups, matching a keyword to its membership query. 
  
  .DESCRIPTION  
  Get-AzureADMSGroup is basically Get-AzureADGroup via Graph API. It's more flexible but also a little tricky. 
  Using the -Filter below we only fetch groups where the GroupTypes property (collection) contains a 'DynamicMembership' value.
  Unfortunately the contains() filter operator isn't implemented (there is startsWith() though) so we need to iterate over all results to find $SearchString matches.
  
  .NOTES
  Author: Niels Scheffers <niels.scheffers@etesian.nl>    
  Last modified: 2022-03-10   
#>
Get-AzureADMSGroup -Filter "GroupTypes/any(s:s eq 'DynamicMembership')" | Where-Object -Property DisplayName -Like '*keyword*';