Apache JMeter is an open-source performance testing and load testing tool used to evaluate the performance, scalability, reliability, and stability of web applications, APIs, databases, and distributed systems. The course provides practical knowledge of creating test plans, thread groups, samplers, controllers, assertions, listeners, timers, correlation, parameterization, and scripting. Learners will gain hands-on experience in load, stress, spike, endurance, and scalability testing while analyzing response times, throughput, errors, and system performance. The program also covers REST API testing, database performance testing, distributed load testing, monitoring, reporting, and CI/CD integration. Through real-time exercises and industry-oriented projects, participants will learn to design and execute effective performance testing solutions for enterprise applications.