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High availability is a cornerstone of resilient system design, ensuring that applications and services are continuously operational and accessible with minimal downtime. In today’s fast-paced digital world, where user expectations are sky-high and tolerance for service interruptions is minimal, ensuring the reliability of IT infrastructure has become a strategic imperative. This article provides an in-depth look at the foundational concepts of high availability, the critical reasons why it matters, and the core strategies and components that support its successful implementation. Understanding High Availability High availability refers to the ability of...