JMeter is the most popular tool when we talk about Performance Testing. Apart from Performance Testing JMeter is also used for API Testing. The main advantage all above is it is free. It helps to test this performance by simulating a number of users. Once the functionality of the application has been tested successfully and end to end flow is working then we must test the performance before releasing it market.
This JMeter course covers every aspect you need to learn & master JMeter.