# 01 - Observability Fundamentals - Metrics, Logs, Traces e Three Pillars

Observability vs monitoring, three pillars (metrics, logs, traces), integration, telemetry basics, statistica (89% richiedono OTel), tool landscape.

## What you'll learn

- 1. Metrics: Aggregated Numerical Data
- 2. Logs: Discrete Events with Context
- 3. Traces: The Path of Requests
- Commercial SaaS Solutions
- Open Source Stack

*This article is part of the **Observability** series on federicocalo.dev.*

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## Read the full article

The complete article (12 min read) with code examples, diagrams, and practical exercises is available here:

**➡️ [01 - Observability Fundamentals - Metrics, Logs, Traces e Three Pillars](https://federicocalo.dev/en/blog/observability-fundamentals-metrics-logs)**

`https://federicocalo.dev/en/blog/observability-fundamentals-metrics-logs`

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*By [Federico Calò](https://federicocalo.dev) — Software Developer & Technical Writer*