<ul data-eligibleForWebStory="true">Load testing evaluates system performance under normal and peak user loads.It aims to test system stability, response time, throughput, and resource usage.Importance lies in identifying bottlenecks, improving user experience, scalability planning, and revenue loss prevention.It involves defining objectives, creating user scenarios, executing tests, monitoring performance, and optimizing.Popular tools include Apache JMeter, LoadRunner, Locust, Gatling, k6, and BlazeMeter.