Which of the following is classified as high availability in a cloud environment?

A load balancer distributes incoming network traffic across multiple servers, ensuring that no single server becomes a bottleneck and that services remain accessible even if one server fails. This redundancy and distribution are core components of achieving high availability in a cloud environment. An access broker manages access to cloud services but doesn't directly contribute to keeping services operational during outages. A Cloud HSM (Hardware Security Module) provides cryptographic key management and protection, which is critical for security but not directly for availability. A WAF (Web Application Firewall) protects web applications from attacks, enhancing security but not directly ensuring continuous service uptime in the face of server failures.