Customer.io Observability

Overview

Implement comprehensive observability for Customer.io integrations: Prometheus metrics (latency, error rates, delivery funnel), structured JSON logging with PII redaction, OpenTelemetry tracing, and Grafana dashboard definitions.

Prerequisites

• Customer.io integration deployed
• Prometheus + Grafana (or compatible metrics stack)
• Structured logging system (pino recommended)

Key Metrics to Track