# microsoft/FeatureManagement-Dotnet

Microsoft.FeatureManagement provides standardized APIs for enabling feature flags within applications. Utilize this library to secure a consistent experience when developing applications that use patterns such as beta access, rollout, dark deployments, and more.

Repository: https://github.com/microsoft/FeatureManagement-Dotnet
Canonical: https://ross.abutalabs.com/products/featuremanagement-dotnet
Language: C#
License: MIT
License Family: permissive
Last push: 2026-08-26T05:27:03+00:00

## Health v2 (maintenance only)
Score: 88/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 67, longevity 100
- inputs: {"age_days": 2633, "days_push": 7, "days_rel": 63, "gap_med": 111, "n_releases_24m": 6}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1180, forks 129 (observed 2026-08-28T04:03:53.460733+00:00)

## What it is
Microsoft.FeatureManagement is a .NET library providing standardized APIs for feature flags in applications, including ASP.NET Core integration, targeting, variants, and telemetry. It supports patterns like beta access, gradual rollout, and dark deployments.

## Use cases
- add feature flags to a .NET application
- gradually roll out new features to users
- run dark deployments of unreleased functionality
- enable beta access for a subset of users
- A/B test feature variants in ASP.NET Core
- toggle features remotely via Azure App Configuration

## When to choose
- you build .NET or ASP.NET Core apps and need standardized feature flag APIs
- you want Microsoft-supported integration with Azure App Configuration
- you need targeting, variants, or telemetry with feature flags

## When to avoid
- your stack is not .NET
- you need a full standalone feature-flag SaaS platform with its own dashboard
- you want a language-agnostic SDK outside the Microsoft ecosystem

## Facets
- artifact type: library
- maturity: stable
- function: feature-flags, configuration-management, middleware
- domain: developer-tools, backend, web-development
- platform: dotnet, cross-platform
- tags: feature-management, feature-toggles, aspnetcore, dark-launch, a-b-testing, microsoft, devops, web-server

## Member repositories
- microsoft/FeatureManagement-Dotnet (main) score 88

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:53.460733+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:25:19.525162+00:00, confidence not recorded.
  - readme: https://github.com/microsoft/FeatureManagement-Dotnet (fetched 2026-08-28T04:03:53.460733+00:00, sha f05a4f91629e)
- Data as of 2026-08-30T08:39:29.467469+00:00.