CNCF-hosted Co-located Events Europe 2025

Migrating observability infrastructure for a 5,000-person financial services company is daunting enough - doing it with just four engineers might seem impossible. This session details MSCI's journey from a traditional Splunk infrastructure to a modern cloud-native observability stack built on OpenTelemetry, Prometheus, Jaeger, Grafana, and Elasticsearch. We'll share our architectural decisions, implementation strategy, and critical lessons learned while maintaining observability during the transition. Through real-world examples, we'll demonstrate how we overcame scaling challenges, managed the cultural shift, and achieved better visibility while significantly reducing costs. Learn practical strategies for planning your own observability migration, including how to phase the transition, train teams effectively, and avoid the pitfalls we encountered.