Be Notified when something changes in Azure

Watch-AzLog.ps1

using namespace Microsoft.Azure.Commands.Insights.OutputClasses
$ErrorActionPreference = 'Stop'
[PSEventDataNoDetails]$lastEvent = Get-AzActivityLog -MaxRecord 1 -StartTime (Get-Date).AddDays(-89) -WarningAction SilentlyContinue
if (-not $lastEvent) {throw [NotImplementedException]'You have an empty activity log!'}

while ($true) {
    Write-Verbose "Waiting for new events..."
    
    while (-not $newEvent) {
        Write-Verbose "No new event detected after $($lastEvent.EventTimestamp.ToLocalTime()), waiting for changes..." 
        Start-Sleep 0.5
        [PSEventDataNoDetails[]]$newEvent = Get-AzActivityLog -StartTime $lastEvent.EventTimestamp.ToLocalTime().AddSeconds(1) -WarningAction SilentlyContinue
    }
    Write-Verbose "New Event(s) Detected at $($newEvent[-1].EventTimestamp.ToLocalTime())"
    foreach ($eventItem in ($newEvent | where {!($_.caller -as [guid])})) {
        $EventSummary = [PSCustomObject][Ordered]@{
            Timestamp = $eventItem.EventTimestamp.ToLocalTime()
            User = $eventItem.Caller
            Operation = $eventItem.OperationName.LocalizedValue
            Target = ($eventItem.ResourceId -replace '/.+/providers/.+?/(.+)','$1')
            Status = $eventItem.Status.LocalizedValue
            ResourceGroup = $eventItem.ResourceGroupName
        }
        New-BurntToastNotification -Text $eventSummary.Target,$eventSummary.User,"$($eventSummary.Operation) $($eventSummary.Status)"
    }

    $lastEvent = $newEvent[-1]
    $newEvent = $null
}