Which service should be used to distribute HTTP traffic across multiple VMs within the same Azure region?

Azure Load Balancer is the correct choice because it operates at Layer 4 (transport layer) and distributes incoming HTTP traffic among healthy virtual machines within the same Azure region. It provides high availability and network performance for applications. Azure Traffic Manager is incorrect because it is a DNS-based traffic load balancer that distributes traffic globally across different regions or endpoints, not within a single region at the HTTP level. Azure ExpressRoute is incorrect as it creates a private, high-bandwidth connection between on-premises networks and Azure, not for distributing HTTP traffic to VMs. Azure Bastion is incorrect because it provides secure RDP/SSH connectivity to VMs directly from the Azure portal, not for load balancing application traffic.