In 2025, mobile-first testing is no longer a choice but a necessity. With mobile traffic dominating the web, traditional QA methods are failing to keep up with user trends like device fragmentation and network variability. This blog post explores how a shift to a comprehensive, user-centric testing strategy—covering functional, performance, usability, and security layers—is essential for success. It highlights the importance of testing on real devices and using modern tools to boost test velocity and collaboration.