Anthony Giretti • 12/17/2025

ASP.NET Core 10: New OpenTelemetry metrics for Identity

This article covers the new OpenTelemetry metrics for Identity in ASP.NET Core 10, which provide built-in instrumentation for user management operations, sign-in attempts, token flows, and 2FA events. It explains how to add the Microsoft.AspNetCore.Identity meter with a single line of code, lists the available metrics for user management and sign-in/session handling, and highlights attributes like sign-in result and type. The feature complements existing meters for hosting, routing, and rate limiting, offering end-to-end visibility from HTTP requests to authorization decisions without custom code.

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#authentication #observability #Opentelemetry