A retail company needs load-balanced traffic across multiple data centers within the same Azure region. Which solution should they implement?

Azure Load Balancer is the correct choice because it operates at Layer 4 (transport layer) and can distribute traffic among virtual machines or services within a single Azure region. It's ideal for internal, non-HTTP/S traffic distribution across multiple data centers (availability zones) within that region. Azure Traffic Manager is a DNS-based traffic router that operates globally and is better suited for distributing traffic across multiple Azure regions or external endpoints, not within a single region for load balancing. Azure Application Gateway is a Layer 7 (application layer) load balancer specifically designed for HTTP/S traffic, offering features like WAF and SSL termination, which isn't specified as a requirement here. Azure Front Door is also a Layer 7 global load balancer and WAF, primarily used for global routing and performance optimization, not for intra-region load balancing.