I have found CrossBrowserTesting to be scalable.
CrossBrowserTesting offers a comprehensive suite of tools for simulating various devices, boosting test coverage and QA efficiency. It simplifies troubleshooting across diverse platforms without needing physical hardware. Selenium API and live test features accelerate testing with precision. Real-world tests with physical devices save on hardware costs. Challenges include network issues, inconsistent testing environments, and lag on real devices. Buyers seek faster testing, broader device support, and improved mobile connection speeds.
