Load Testing
Load testing is the practice of sending heavy simulated traffic to a single site all at once to measure how it responds. Load testing measures page speed, identifies security issues, and finds the breaking point.
Load testing is difference between knowing your site works for one visitor and knowing it works for ten thousand at the same time. If you're expecting a traffic spike from a product launch, a campaign, or a news mention, load testing tells you whether your hosting can handle it before the crowd shows up. It's a part of quality assurance worth doing ahead of any high-stakes launch.