Load Testing

Load Testing is a type of performance testing that evaluates an application's behavior under different levels of expected user traffic. This testing simulates a realistic user load, from normal daily usage to peak traffic spikes, to ensure the system remains stable, responsive, and reliable under expected demand.

Example: An online retailer performs Load Testing on its website during a holiday season sale. They use a tool to simulate 500,000 concurrent users Browse products, adding items to their cart, and checking out. This test helps them confirm that the website's servers, databases, and other backend components can handle the increased traffic without slowing down, crashing, or impacting the user experience.