11.1 API product analytics: The business challenge11.1.1 API product development as a PDSA cycle11.1.2 The developer journey map11.1.3 API product metrics11.1.4 Tracking metrics for the Product Catalog API11.2 API monitoring metrics11.2.1 RED metrics11.2.2 Rate limits11.2.3 Monitoring tools11.2.4 Alerting and synthetic monitoring11.2.5 Service level indicators, service level objectives, and service level agreements11.3 Wrapping it up