---
title: "Observe and act | Grafana Cloud documentation"
description: "The product and solution surface where you spend most of your time, monitor, alert, respond, test, connect, and control costs."
---

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

# Observe and act

The product and solution surface where you spend most of your time: monitor applications, infrastructure, and AI systems; alert and measure reliability; respond to incidents; test and validate; connect data sources; instrument and send data; and manage telemetry costs.

## Explore

[Monitor applications  
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Track user journeys, application performance, and correlate signals to detect and resolve issues.](/docs/grafana-cloud/observe-and-act/monitor-applications/)

[Monitor infrastructure  
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Monitor the health and performance of operating systems, databases, Kubernetes, and cloud services.](/docs/grafana-cloud/observe-and-act/monitor-infrastructure/)

[Grafana Agent Observability  
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Observe AI and LLM applications with purpose-built AI observability.](/docs/grafana-cloud/observe-and-act/agent-observability/)

[Alert and measure reliability  
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Detect issues with Grafana Alerting and track service reliability with SLOs.](/docs/grafana-cloud/observe-and-act/alert-and-measure-reliability/)

[Respond to incidents  
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Coordinate incident response with Grafana IRM and Service Center.](/docs/grafana-cloud/observe-and-act/respond-to-incidents/)

[Test and validate  
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Proactively test production and pre-production environments with synthetic monitoring and performance testing.](/docs/grafana-cloud/observe-and-act/testing/)

[Connect to data sources  
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Consolidate data from externally hosted and third-party sources.](/docs/grafana-cloud/observe-and-act/connect-externally-hosted/)

[Instrument and send data  
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Discover the methods available for instrumenting and sending data to Grafana Cloud.](/docs/grafana-cloud/observe-and-act/send-data/)

[Optimize data  
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Optimize which signals get stored so your teams keep only the most valuable telemetry.](/docs/grafana-cloud/observe-and-act/adaptive-telemetry/)