What problem does it solve? React Native teams face a fast-moving ecosystem: the legacy Bridge architecture is end-of-life, App Center is retired, and choosing between state libraries, navigation stacks, E2E frameworks, and OTA update paths is error-prone. This Skill consolidates current, version-aware guidance so you make the right architectural decisions the first time. ## Core Features & Use Cases - New Architecture migration: Adopt JSI, TurboModules, Fabric, and Codegen with a concrete RN 0.76–0.82 / Expo SDK 53–55 timeline and third-party module audit steps. - Stack selection: Opinionated picks for state (TanStack Query, Zustand, Redux Toolkit, Jotai), navigation (React Navigation v7, Expo Router), lists (FlashList), and animations (Reanimated 3). - Testing & delivery: Maestro vs Detox E2E trade-offs, EAS Build/Submit/Update, and App Center retirement re-platforming to Azure DevOps, GitHub Actions, Sentry, and Azure Monitor. - Azure enterprise integration: react-native-msal auth with Entra ID, PKCE flow, and OpenTelemetry to Application Insights with Hermes instrumentation caveats. - Use Case: You are migrating an enterprise Expo app off App Center before retirement. Use this Skill to map each App Center pillar (CI/CD, OTA, crash reporting, analytics) to its replacement and configure MSAL auth correctly on iOS and Android. ## Quick Start Ask the assistant to review your React Native app's architecture and produce a migration plan to the New Architecture with App Center replacements.