Monitoring Infrastructure Summary Five-layer monitoring infrastructure: data collection layer (asynchronous streaming via Kafka/Kinesis/Pub-Sub), storage layer (time-series database with tiered retention), computation layer (scheduled metric computation, idempotent and deterministic), alerting layer (PagerDuty/Opsgenie with severity routing), and dashboard layer (Grafana/Metabase for operational and governance views). See for detailed treatment. Key outputs

• Five infrastructure layers
• Tooling options per layer
• Tiered storage strategy