Data-Driven Metric Development for Online Controlled Experiments: Seven Lessons LearnedData-Driven Metric Development for Online Controlled Experiments: Seven Lessons Learned Online controlled experiments, also called A/B testing, have been established as the mantra for data-driven decision making in many web-facing companies. In recent years, there are emerging research works focusing on building the platform and scaling it up [34], best practices and lessons learned to obtain trus
