Azure VPN Gateway, offering secure site-to-site VPN connections with encryption for data in transit, suitable for scenarios with moderate bandwidth requirements.

Azure ExpressRoute, providing dedicated private network connectivity with high bandwidth and reliability, ideal for enterprise-grade connections with stringent performance and compliance needs.

Azure Virtual Network Peering, enabling seamless connectivity between Azure virtual networks, but not directly between on-premises and Azure environments.

Azure DNS, a service for managing domain name resolution, which does not facilitate network connectivity between on-premises and Azure.

Both Azure VPN Gateway and Azure ExpressRoute, combining the benefits of secure VPN connections for less critical data and dedicated private connectivity for high-priority traffic.