When it comes to mobile shopping, speed and stability are crucial as most users will leave a site or an app that takes longer than three seconds to load, with the bounce rate increasing even further with loading time. Mobile commerce is on the rise, with Christmas Day in 2020 seeing 52% of revenue coming from smartphones, surpassing the halfway point for the first time. Apps convert better than websites but are also more fragmented, making it a must for companies to improve speed, stability, and performance to compete. Pre-production testing, such as UI, unit, and real device testing, can help tackle the challenges of the fragmented production environment by accurately predicting the app's behavior on each platform. Monitoring app performance using APM solutions helps detect deep-level application performance problems before users report them, with automated testing practices helping predict the app's behavior on all supported platforms and fix bugs early on. Ultimately, fast, frictionless, and enjoyable experiences for customers are crucial for user acquisition, conversion, and retention rates, as well as ratings and downloads; and ultimately, revenue.