Performance testing directly affects user experience by ensuring that services run smoothly under various conditions. More info you can find about non-functional testing
https://www.sam-solutions.com/servic...ting-services/ Take streaming platforms, for example. They conduct extensive performance testing to ensure high traffic doesn’t lead to buffering or downtime. I was part of a team that optimized a video streaming service, and we focused on stress testing the servers to handle sudden spikes in viewership, especially during live events. We used real-time monitoring tools to adjust resources dynamically, ensuring a seamless experience for users.