High Availability (HA) refers to systems designed to remain operational and accessible for as much time as possible. This is achieved through redundancy, where critical components are duplicated, ensuring that if one fails, another can take over without interrupting service. HA is essential for businesses that rely on continuous access to their applications and data. To implement HA, organizations often use techniques like load balancing and failover systems. These methods distribute workloads across multiple servers or automatically switch to backup systems in case of failure. Technologies such as clustering and replication are commonly employed to enhance HA in various environments.