Observability is crucial in today's complex IT environments to maintain reliable and efficient systems. There are three levels of observability maturity: basic, intermediate, and advanced. Basic observability focuses on essential metrics and simple alerting mechanisms, while enhanced observability incorporates more sophisticated metrics, logs, and traces. Advanced observability represents the highest level, where observability is deeply integrated into development and release lifecycles, including predictive analytics, automated root cause analysis, and proactive issue resolution. New Relic can be leveraged at each level to improve visibility, diagnose issues, and respond effectively to performance problems. By employing full-stack observability, AI-powered insights, and advanced alerting integrations, organizations can achieve enhanced reliability, improved performance, and proactive remediation, ensuring high system performance, better collaboration across teams, and an optimal digital experience for end users.