Customers can use configurable maintenance windows to schedule gateway maintenance at a time that is most convenient for their business. Currently customer-controlled maintenance windows are available in public preview for 4 types of gateway resources: (1) Virtual Network Gateway in ExpressRoute service (2) Virtual Network Gateway in VPN Gateway service (3) VPN Gateway (Site-to-Site) in Virtual WAN service (4) ExpressRoute Gateway in Virtual WAN service.
Learn more about customer controlled maintenance for ExpressRoute, VPN and Virtual WAN.