# Introduction

> Last9 is an observability platform for logs, metrics, and traces. Built on OpenTelemetry and Prometheus with high-cardinality storage, alerting, and SLOs.

Source: https://last9.io/docs/

New to Last9? Read [What is Last9?](/docs/introduction/) for a product overview, or jump to the [Quick Start Guide](/docs/onboard/) to send your first telemetry data. This documentation covers ingestion via OpenTelemetry and Prometheus, the Control Plane, alerting and SLOs, log and trace exploration, dashboards, and the Last9 MCP server for AI agents.

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## Other Resources

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