Example of retrieving a list of Azure AD Enterprise Applications

Get-AzPortalEnterpriseApp.ps1

function Get-AzPortalEnterpriseApp {
    [CmdletBinding(SupportsShouldProcess)]
    param (
        #Filter by display name or application ID
        [String]$Filter,
        #Set the result size. Default is first 50 results
        [int]$ResultSize = 50
    )

    $InvokeApiRequestParams = @{
        Target = "ManagedApplications"
        Action = "List"
        Method = "POST"
        Body   = ConvertTo-Json @{
            appListQuery = 0
            top          = $resultSize
            searchtext   = $Filter
        }
    }

    $result = Invoke-AzPortalRequest @InvokeApiRequestParams
    $result.appList
}