“The WBR is an important embodiment of how metrics are put into action at Amazon, but it isn’t the only one. Metrics dashboards and reports are established by every engineering, operations, and business unit at the company. In many cases metrics are monitored in real time, and each critical technical and operational service receives an “alarm” to ensure that failures and outages are identified instantly. In other cases, teams rely on dashboards that are updated hourly or daily for their metrics.”