The LaunchDarkly team overcame challenges with traditional A/B testing tools by adopting a feature flags-based approach to experimentation, eliminating the need for DOM-based JavaScript injections and resulting in faster load times, more reliable experiments, and improved user experience. This shift enabled them to run multiple experiments simultaneously, increasing testing velocity and leading to significant improvements in conversions, cost per lead, and website performance. By streamlining experiment setup and execution, the team was able to focus on strategic initiatives, fostering a culture of continuous improvement and innovation.