---
title: "Quick reference | Grafana Labs"
description: "Summary of all four levels and key resources"
---

> For a curated documentation index, see [llms.txt](/llms.txt). For the complete documentation index, see [llms-full.txt](/llms-full.txt).

## The four levels at a glance

| Level       | Key question                      | Primary tool                                               | Deep dive course                                                          |
|-------------|-----------------------------------|------------------------------------------------------------|---------------------------------------------------------------------------|
| **Level 1** | “Is my infrastructure healthy?”   | Integrations, Cloud Provider Olly, DB Olly, K8s Monitoring | Integrations, Data Sources, CP Olly, DB Olly, Fleet Management, Send Data |
| **Level 2** | “Which service is the problem?”   | Application Observability (Service Inventory, RED)         | App Olly (coming soon)                                                    |
| **Level 3** | “Why is this request slow?”       | Traces, Profiling, Frontend Olly                           | Tracing, Profiling (coming soon)                                          |
| **Level 4** | “What’s in my application logic?” | OpenTelemetry SDKs, Custom Metrics                         | Custom Instrumentation (coming soon)                                      |

## Operational practices (cross-cutting)

| Practice                | Primary tools                             | When to focus                   |
|-------------------------|-------------------------------------------|---------------------------------|
| **Alerting and IRM**    | Alerting, SLOs, OnCall, Incident          | Once you have data at any level |
| **Proactive testing**   | Synthetic Monitoring, k6                  | After Level 1 is stable         |
| **Platform management** | Adaptive Telemetry, RBAC, SSO             | When scaling across teams       |
| **Grafana Assistant**   | Natural language queries, troubleshooting | Available at any level          |