New Relic

New Relic is a pioneer in the APM space, offering a unified data platform for all telemetry (metrics, events, logs, and traces). It provides deep visibility into application performance, from frontend browser interactions to backend services and database queries. Its 'Looker' integration and powerful NRQL query language allow engineering teams to build custom dashboards and alert on specific business KPIs. New Relic is particularly strong in distributed tracing, helping developers pinpoint bottlenecks in complex microservices architectures.