To achieve high availability across multiple Azure data centers within the same region, which feature should a company deploy?

Availability Zones are physically separate data centers within an Azure region, each with independent power, cooling, and networking. Deploying resources across multiple Availability Zones ensures high availability by protecting applications and data from datacenter-level failures. If one zone experiences an outage, resources in other zones remain operational. Azure Traffic Manager is a DNS-based traffic load balancer that distributes incoming traffic across global Azure regions or external endpoints, focusing on global distribution and performance, not high availability within a single region. Azure App Service is a platform for building, deploying, and scaling web apps and APIs, not a high availability feature itself. Azure Functions is a serverless compute service for event-driven code execution, also not a high availability solution for infrastructure.