The document discusses the lean analytics cycle of metrics, hypothesis, experiment, and act. It provides examples of how Hello Bar used this process to improve their installation rate. They found a low installation rate in metrics, hypothesized that more options would increase installations, tested this in an experiment, and achieved a 40% increase. Through dozens of experiments, their rate increased by 89%. The document encourages analyzing metrics to find opportunities, forming hypotheses through research, rigorously testing hypotheses, and making data-driven decisions.