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Azure Application Insights

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description Azure Application Insights Overview

Part of Azure Monitor, Application Insights collects application telemetry and provides tools for investigating performance and failures. It helps teams follow requests across services, examine dependencies and test endpoint availability. Its integration with Azure services and the Azure portal makes it relevant to organizations already operating in Microsoft's cloud. The emphasis is on understanding application behavior rather than simply checking whether a server responds.

Developers can investigate where a request slowed down or which dependency failed, provided the application has the necessary instrumentation. Azure architects and operations teams can use that context alongside other monitoring data. Its usefulness is not restricted to applications hosted exclusively on Azure, and the completeness of the view depends on what has been connected and configured.

help Azure Application Insights FAQ

What does Azure Application Insights monitor in a web app?

Application Insights monitors requests, dependencies, exceptions, performance counters, availability, and user telemetry. It is part of Azure Monitor and is commonly used with .NET, Node.js, Java, and browser JavaScript apps.

Can Application Insights trace requests across microservices?

Yes, distributed tracing is one of its core APM uses. It can connect a front-end request to downstream dependencies such as Azure Functions, SQL databases, or HTTP services when telemetry is instrumented correctly.

How is Application Insights different from Cloudflare Analytics?

Cloudflare Analytics is strongest at edge traffic, DNS, CDN, firewall, and request-level network visibility. Application Insights looks inside the application runtime, including exceptions, dependency calls, and slow server-side operations.

What query language does Application Insights use?

Application Insights data is queried with Kusto Query Language, usually abbreviated KQL. Teams use KQL to investigate tables such as requests, dependencies, exceptions, traces, and customEvents.

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