ATA Lightweight Gateway is an option if there is a technical or managerial/financial restrictions, otherwise ATA Gateway is the optimum choice. ATA Lightweight could easily stop working by attacker by stopping the service or DoS against DC.
Technical restrictions:
-Network switch doesn't support SPAN/RSPAN/ERSPAN and you can't get SPAN through network TAP either.
-The monitored domain controllers are on the cloud (Azure). The only option on this case is a Lightweight Gateway.
Managerial/Financial restrictions:
-Can't afford a dedicated VM or physical server for ATA Gateway.