New Relic
In plain terms
A cloud observability and application-performance platform.
Going deeper
New Relic monitors application performance, infrastructure, and user experience with detailed telemetry and dashboards. It tracks how apps behave in production.
Under the hood
Strong APM with distributed tracing and real-user monitoring; usage-based pricing.
Examples
APM, performance monitoring, distributed tracing, dashboards, alerting.
Think of it like...
Like a detailed health monitor strapped to your running application.