---
title: "Migration to Self-Hosted Infrastructure"
description: "Move builds, CI/CD, and delivery off hosted platforms onto infrastructure you own, with full control over cost, security, and operations."
url: https://www.callstack.com/services/migration-to-self-hosted-infrastructure
updated: 2026-11-06T10:08:34.718Z
---

# Migration to Self-Hosted Infrastructure

Move builds, CI/CD, and delivery off hosted platforms onto infrastructure you own, with full control over cost, security, and operations.

_[Expert Engineering](/ai-native-engineering) › [Migrations & Upgrades](/capabilities/ai-assisted-migrations)_

**Own the infrastructure your delivery runs on**

Hosted CI and device clouds get expensive and restrictive at scale. We migrate builds, pipelines, and release infrastructure onto hardware you control - without pausing delivery while the ground moves.

[Get my migration plan](#contact) · [How it works](#what-you-get)

## Migrations & Upgrades

- React Foundation Founding Member · 300+ commits to React Native · Contributing since 2016
- Industry runs on our tooling · 50M+ OSS downloads / month
- 4x More React Native pages · 30% React Native adoption
- 60 → 10min Faster builds after replacing Jenkins with EAS
- React Native Brownfield · Tooling for introducing React Native into existing native apps incrementally.
- 100+ Enterprise projects delivered

## What you get: In-house delivery, without the outage.
- **Economics before migration** Current spend mapped against self-hosted cost, so the business case is explicit up front.
- **Self-hosted runners** macOS and Linux build infrastructure tuned for React Native workloads, inside your network.
- **Device lab setup** Real iOS and Android devices wired into CI on hardware you own.
- **Zero-downtime cutover** Old and new pipelines run in parallel until the new stack proves itself.
- **Security by design** Secrets, signing, and access controls rebuilt for your environment, not bolted on.
- **Runbooks and handover** Your team operates the stack confidently after we leave.

**Delivery on your terms.** Lower cost, tighter control, and infrastructure that is finally yours. [Get my migration plan](#contact)

## How we work together: Move from migration plan to rollout.

### Extend your team (1 week)
Our senior engineers join your team to ship features, guide technical decisions, and strengthen delivery.
- Your roadmap and workflow
- Expertise shared as we work
- Flexible timezone coverage
### Deliver a project (1-12 months)
We take agreed work from technical planning to release, with clear responsibilities and progress you can see.
- 3 Callstack engineers ship like 6
- Impact visible before sprint two
- End-to-end delivery
### Solve specific challenge (as needed)
We address a performance, migration, or infrastructure challenge, or run training around your team’s needs.
- Focused reviews or implementation
- Knowledge your team keeps
- Outcomes guaranteed with contract

## What shipping at AI speed looks like.

- [Migrating iOS and Android Apps to React Native for AutoZone](/case-studies/migrating-ios-and-android-apps-to-react-native-for-autozone): 2x growth in mobile user base during the migration period
- [Migrating Questrade Edge Mobile to a Faster, More Scalable Architecture](/case-studies/migrating-questrade-edge-mobile-to-a-faster-more-scalable-architecture): 33% fewer re-renders across most features
- [Migrating a Legacy React Native App to Expo for Faster Builds and Simplified Releases](/case-studies/migrating-a-legacy-react-native-app-to-expo-for-faster-builds-and-simplified-releases): 6x faster builds after replacing Jenkins with EAS
- [Training HelloFresh Engineers to Build Production Apps With React Native](/case-studies/training-hellofresh-engineers-to-build-production-apps-with-react-native): 2.8x increase in knowledge over 8 weeks (25% → 71% assessment scores)

**Delivery on your terms.** Lower cost, tighter control, and infrastructure that is finally yours. [Get my migration plan](#contact)

> We had been struggling with React Native application performance until we met Callstack.
>
> — Huỳnh Chí Hùng, Associate Director / MOMO

We’ll connect you with the right expert within 24 hours.

## Let’s find the right path for your product.

Still have questions?
Whether you’re planning new work or unblocking an existing product, we’ll help you choose the right path forward.
**What does self-hosting actually save?**

At scale, hosted runner minutes and device clouds usually cost multiples of owned hardware. Below a certain volume, the overhead wins - our assessment tells you which side you are on.
**Who maintains it afterwards?**

Your team, with runbooks and optional maintenance agents that handle updates and hygiene. We design for low-touch operation.
**Can we keep parts hosted?**

Yes. Hybrid is common: self-host the expensive, sensitive workloads and keep hosted convenience where it is cheap.
**How do you avoid breaking delivery mid-migration?**

Parallel operation. The new stack shadows the old one until reliability and speed are proven, then traffic cuts over.
**What about macOS builds?**

Apple silicon build machines are part of the design - provisioning, signing, and caching included. They are the most common pain point and the biggest saving.
**How long does the migration take?**

Typically weeks, driven by pipeline count and signing complexity rather than code volume. The plan includes stage-by-stage timing.
[Book consultation](#contact)

## Open source

- [React Native Brownfield](https://github.com/callstack/react-native-brownfield): Incrementally move your iOS and Android apps to React Native without breaking
- [Agent Skills](https://github.com/callstackincubator/agent-skills): Callstack’s best practices on React Native performance optimization, upgrading, CI workflows, and brownfield migrations
- [React Native Community CLI](https://github.com/react-native-community/cli): Command line tools to help you build React Native apps
- [React Native Builder Bob](https://github.com/callstack/react-native-builder-bob): Simple set of CLIs to scaffold and build React Native libraries for different targets
- [Rock](https://www.rockjs.dev/): Modular toolkit for teams building React Native apps

Insights

## Worth your time, by engineers.

[Explore Insights](https://www.callstack.com/insights)

- [React Native in .NET MAUI: A Practical Brownfield Integration Guide](https://www.callstack.com/blog/react-native-in-net-maui-a-practical-brownfield-integration-guide) (Aug 27 · Article): This article walks through how we embedded React Native inside a .NET MAUI application using a brownfield setup. It covers the packaging layer, lifecycle wiring on iOS and Android, navigation through MAUI Shell, and shared state between the MAUI and React Native runtimes.
- [Migration to React Native in 2026 Starts With a Delivery Question](https://www.callstack.com/blog/migration-to-react-native-in-2026-starts-with-a-delivery-question) (Aug 3 · Article): This article helps mobile teams choose between brownfield and greenfield React Native migration. It explains how each approach shifts risk across continuity, native dependencies, delivery pressure, verification, and architecture ownership, and introduces a checkpoint-based path for teams that want to test a greenfield rebuild before committing. It also shows where AI can help and what still needs human control.
- [How we made Hybrid iOS apps compile 39% faster with React Native Brownfield](https://www.callstack.com/blog/how-we-made-hybrid-ios-apps-compile-39-faster-with-react-native-brownfield) (Jul 8 · Article): React Native Brownfield 3.10 brings iOS prebuilts into the packaging flow, removing a major compile step from hybrid app builds. This article explains how the integration works, what changed under the hood, and what our benchmark results show for React Native and Expo projects.
- [AI-Assisted React Native Migration for TV: Lessons From Zattoo](https://www.callstack.com/blog/ai-assisted-react-native-migration-for-tv-lessons-from-zattoo) (Jun 11 · Article): Zattoo started its React Native TV migration before today’s AI-assisted workflows became common. Their story shows where AI can now support similar migrations, from onboarding and refactoring to testing and platform-specific implementation work.
- [AI-Supported Brownfield Migration to React Native](https://www.callstack.com/blog/ai-supported-brownfield-migration-to-react-native) (Jun 3 · Article): Brownfield migration is rarely slowed by the rewrite itself. The real cost sits in setup, requirements capture, native integration, and validation. This article shows how an AI-supported workflow reduces that work from weeks to days while keeping engineering review in the loop.
- [Brownie: A Type-Safe Shared-State Workflow for Brownfield React Native](https://www.callstack.com/blog/brownie-a-type-safe-shared-state-workflow-for-brownfield-react-native) (Mar 31 · Article): For teams embedding React Native into existing native apps, Brownie reduces state-management glue code at the integration boundary. One TypeScript schema drives shared state across React Native, iOS, and Android with a workflow built for production use.
- [From Brownfield Complexity to AI-Supported React Native Migration ](https://www.callstack.com/blog/from-brownfield-complexity-to-ai-supported-react-native-migration) (Mar 24 · Article): Brownfield migrations often fail due to ordering and integration gaps, not framework limits. This article explains how an AI-supported workflow helps enforce correct sequencing across packaging, startup, and runtime validation.
- [Handling Navigation in React Native Brownfield Apps](https://www.callstack.com/blog/handling-navigation-in-react-native-brownfield-apps) (Mar 13 · Article): Navigation between React Native and existing native screens can be difficult in brownfield apps. This guide shows how to define a navigation contract, generate native delegates, and connect both layers using @callstack/brownfield-navigation.
- [Announcing: React Native Brownfield v3 with Expo Config Plugin](https://www.callstack.com/blog/announcing-react-native-brownfield-v3-with-expo-config-plugin) (Feb 26 · Article): Moving a large native app to React Native rarely happens in one rewrite. React Native Brownfield v3 combines Expo with an artifact-based packaging approach, so you can ship React Native screens inside your existing app without destabilizing your product.
- [Introducing Brownie: Type-Safe Shared State for React Native Brownfield Apps](https://www.callstack.com/blog/introducing-brownie-type-safe-shared-state-for-react-native-brownfield-apps) (Jan 20 · Article): Brownie is a new shared state library designed for React Native brownfield applications. It addresses a common pain point in mixed native and React Native codebases: keeping state consistent without building and maintaining custom Turbo Modules. With Brownie, teams define their state once in TypeScript and generate matching native types automatically. The article introduces the core ideas, shows how the workflow fits into real brownfield apps, and outlines what’s included in the iOS alpha release.
- [Powering Native Apps with React Native Brownfield](https://www.callstack.com/blog/powering-native-apps-with-react-native-brownfield) (Apr 28 · Article): This article introduces the brownfield approach, explaining how it allows you to bring React Native into existing native apps without starting from scratch. It then covers how our library, React Native Brownfield, simplifies this process by embedding React Native screens into native apps, and provides an overview of its structure and key features.
- [iOS Brownfield App With React Native in an Easy Way](https://www.callstack.com/blog/ios-brownfield-app-with-react-native-in-an-easy-way) (Sep 6 · Article): Integrating React Native into an existing iOS app doesn't have to be complicated. This guide walks through how to add React Native screens to a native codebase incrementally, with practical tips to navigate between native and React Native views seamlessly.
- [Why Is It Important to Always Run The Latest Version of React Native?](https://www.callstack.com/blog/always-run-the-latest-version-of-react-native) (Dec 27 · Article): Keeping your React Native app up to date is crucial for accessing new features, performance improvements, and security fixes. While upgrading can be challenging, tools like React Native Upgrade Helper and align-deps simplify the process of applying changes and managing dependencies.
- [Why Brownfield Development With React Native Is Worth Your Attention](https://www.callstack.com/blog/brownfield-development-with-react-native) (Nov 18 · Article): Migrating to React Native doesn't have to disrupt your existing apps. We walk through how to introduce React Native incrementally using a brownfield approach, allowing you to validate early technical risks before scaling up.
- [Stripe React Native Migration Function by Function - Tipsi Migration Guide, Part 3](https://www.callstack.com/blog/stripe-react-native-migration-function-by-function) (Feb 6 · Article): This article dives into the details of migrating each payment function from tipsi-stripe to the official stripe-react-native SDK. It covers card components, accepting payments, tokens, Apple Pay, Google Pay, and provides a real-world migration example.
- [Stripe React Native: the Most Common Questions - Tipsi Migration Guide, Part 5](https://www.callstack.com/blog/stripe-react-native-the-most-common-questions) (Feb 8 · Article): Migrating from tipsi-stripe to the official Stripe React Native SDK? This guide answers common questions about feature parity, incremental migration, Expo support, and more to help you make the switch smoothly.
- [Stripe React Native Configuration - Tipsi Migration Guide, Part 2](https://www.callstack.com/blog/stripe-react-native-library-configuration) (Dec 6 · Article): Migrating from tipsi-stripe to the official Stripe React Native SDK? This guide walks through the key steps to remove tipsi-stripe, add stripe-react-native, and initialize the new library using the StripeProvider component.
- [Simplify Your iOS Brownfield Integration With RootViewFactory](https://www.callstack.com/blog/simplify-your-ios-brownfield-integration-with-rootviewfactory) (Oct 1 · Article): Integrating React Native into existing iOS apps can be tricky, especially when enabling the New Architecture. RootViewFactory simplifies this process, making it easier to create React Native views in brownfield apps without verbose setup or refactoring.
- [Migrating a React Native Library to the New Architecture](https://www.callstack.com/blog/migrating-a-react-native-library-to-the-new-architecture) (Nov 3 · Article): Migrating a React Native library to the New Architecture doesn't have to be daunting. This guide walks through the key steps, from writing TypeScript specs to extending generated interfaces, with helpful resources and examples from recently migrated libraries.
- [Migrating React and Native Apps To React Native - Everything You Need To Know](https://www.callstack.com/blog/migration-to-react-native) (Apr 19 · Article): Migrating native or React apps to React Native doesn't have to be a complete rewrite. We walk through the key differences between greenfield and brownfield approaches, and share best practices for incrementally introducing React Native while maintaining your existing apps.
- [How to Upgrade React Native in a Brownfield Application](https://www.callstack.com/blog/how-to-upgrade-react-native-in-a-brownfield-application) (Nov 28 · Article): Upgrading React Native in a brownfield app can be complex, with challenges like dependency conflicts and breaking changes. This guide walks through the process step-by-step, from aligning dependencies to updating native code for iOS and Android. It also covers common pitfalls and tips to make the upgrade smoother.
- [How to Not Break Your App After Migrating From Tipsi Stripe to Stripe React Native - Migration Guide, Part 4](https://www.callstack.com/blog/how-to-not-break-your-app-after-migrating-to-stripe-react-native) (Feb 7 · Article): Migrating from Tipsi Stripe to Stripe React Native can be daunting, but following best practices helps ensure a smooth transition. This guide shares key steps like writing end-to-end tests, building your app frequently during migration, and setting up crash reporting to catch any issues early.
- [How to Migrate From Tipsi Stripe to the Stripe React Native SDK - Migration Guide, Part 1](https://www.callstack.com/blog/how-to-migrate-from-tipsi-stripe-to-stripe-react-native-sdk) (Nov 8 · Article): Migrating from the unmaintained tipsi-stripe library to the official stripe-react-native SDK doesn't have to be painful. This guide walks through the key differences, new features, and steps to upgrade your React Native app to the latest payments integration.
- [How to Integrate React Native With an Existing App](https://www.callstack.com/blog/how-to-integrate-react-native-with-an-existing-app) (Nov 25 · Article): Integrating React Native into an existing app doesn't have to be daunting. We walk through a practical example of adding React Native to the open-source Mastodon iOS and Android apps, sharing step-by-step instructions to get you started.
- [Developing an Android Brownfield App With React Native in an Easy Way](https://www.callstack.com/blog/android-brownfield-app-with-react-native-in-an-easy-way) (Sep 6 · Article): Integrating React Native into an existing Android app doesn't have to be complicated. This guide walks through how to add React Native screens to a native Android codebase in a few simple steps using the react-native-brownfield library.
- [Adding React Native to an Existing Flutter App](https://www.callstack.com/blog/adding-react-native-to-an-existing-flutter-app) (Jul 24 · Article): Adding React Native to an existing Flutter app is possible, though it requires integrating two cross-platform runtimes. We walk through the key steps to embed React Native views, set up popular libraries, and explore potential use cases for incrementally migrating or extending Flutter apps with React Native.
- [You Don’t Need a Rewrite, You Need React Native Brownfield](https://www.callstack.com/podcasts/you-dont-need-a-rewrite-you-need-react-native-brownfield) (May 16 · Podcast): Discover how modern React Native Brownfield integration enables cross-platform power in native apps, without rewriting from scratch.
- [Migration to React Native](https://www.callstack.com/podcasts/migration-to-react-native) (Jun 14 · Podcast): The 13th episode of React Universe On Air (formerly known as The React Native Show) is fully focused on migrating from different technologies to React Native, the two most popular approaches to this process (greenfield and brownfield software development), and our state-of-the-art brownfield approach.
- [Lessons from Shopify's Migration to React Native with Mustafa Ali](https://www.callstack.com/podcasts/lessons-from-shopifys-migration-to-react-native-with-mustafa-ali) (Jan 13 · Podcast): Learn how Shopify's migration to React Native led to 86% code unification, reduced build times, and seamless feature parity across platforms.
- [Brownfield Development With React Native](https://www.callstack.com/podcasts/brownfield-development-with-react-native-6) (Jun 8 · Podcast): Learn how to tackle brownfield development with React Native, explore real-world challenges, and discover the React Native Brownfield library.
- [Same Destination, Different Roads: Migrating a Live App at Scale](https://www.callstack.com/events/same-destination-different-roads-migrating-a-live-app-at-scale) (Oct 8 · Talk): Łukasz Chludziński compares Greenfield and Brownfield approaches to migrating a live app, weighing continuity, delivery speed, cost, and risk.
- [Adoption of Brownfield in React Native](https://www.callstack.com/events/adoption-of-brownfield-in-react-native) (Aug 27 · Talk): Artur Morys-Magiera will explain how teams can adopt React Native incrementally inside existing native applications.
- [React Native Brownfield Deep Dive: How RN Moves Into Native Applications](https://www.callstack.com/events/react-native-brownfield-deep-dive-how-rn-moves-into-native-applications) (Oct 9 · Talk): Artur Morys-Magiera will explain how React Native can move into an existing native app without forcing a big-bang rewrite.
- [Agentic AI in the Wild - Boston Dev Community Meetup](https://www.callstack.com/events/agentic-ai-in-the-wild---boston-dev-community-meetup) (Aug 18 · Meetup): Join us in Boston on August 18 for an evening focused on a question most teams hit quickly with AI agents: how do you make them dependable once they leave the prototype phase and start touching code, workflows, and delivery timelines?
- [KLJS x React Universe Meetup, Kuala Lumpur](https://www.callstack.com/events/kljs-x-react-universe-meetup-kuala-lumpur) (May 5 · Meetup): Join Callstack and Ryt Bank on May 5 in-person for a React Universe meetup with practical talks for engineers working with React and React Native in production. 
- [From Native to React Native for TV: The Zattoo Case](https://www.callstack.com/events/from-native-to-react-native-for-tv-the-zattoo-case) (Apr 27 · Webinar): Learn why and how Zattoo moved from native TV apps to React Native, what changed for their team, and what it takes to scale across multiple platforms efficiently.
- [AI-Assisted Migrations to React Native: From Months to Days](https://www.callstack.com/events/ai-assisted-migrations-to-react-native-from-months-to-days) (Apr 2 · Webinar): Reduce migration time from months to days by using AI in real React Native workflows. Learn when to migrate incrementally and when starting fresh is the better option.
- [State of Brownfield in React Native](https://www.callstack.com/events/state-of-brownfield-in-react-native) (Apr 23 · Talk): A practical look at Brownfield React Native adoption in mature native apps, architecture, tooling, and real-world tradeoffs.
- [Vega Developer Meetup](https://www.callstack.com/events/vega-developer-meetup) (Nov 17 · Talk): Learn how to integrate React Native into Android TV apps at the Vega Developer Meetup. Workshop, roadmap, and community talks, live in Munich.
- [Scaling React Native at Zalando: How Brownfield Migration Paid Off](https://www.callstack.com/events/scaling-react-native-at-zalando-lessons-from-brownfield-migration) (Nov 5 · Webinar): Discover how Zalando scaled React Native across a massive e-commerce app, from internal buy-in to brownfield rollout, and what they learned.
- [React Everywhere: Bringing React Into Native Apps](https://www.callstack.com/events/react-everywhere-bringing-react-into-native-apps) (Oct 8 · Talk): Most teams use React on the web but still rely on native code or WebViews in their mobile apps. This talk explores how React Native can replace WebViews with minimal effort, allowing React to power both web and mobile.
- [How to Gradually Migrate From React Native Community CLI to Expo](https://www.callstack.com/events/how-to-gradually-migrate-from-react-native-cli-to-expo) (Aug 5 · Webinar): Learn how to migrate your React Native Community CLI app to Expo incrementally, with minimal risk. A recording of a webinar hosted by Callstack & Expo.
- [Brownfield Incremental React Native Adoption x Rock](https://www.callstack.com/events/brownfield-incremental-react-native-adoption-x-rock) (Jun 24 · Talk): Learn how to smoothly adopt React Native in your existing apps using Callstack’s Rock for easier setup, faster deployment, and seamless integration.
- [React Universe Meetup, New York](https://www.callstack.com/events/react-universe-meetup-new-york-june-2025) (Jun 24 · Meetup): Join us in NYC or online for React Universe Meetup: tech talks, real-world insights, and networking with React Native devs. June 24, 2025.
- [Adding React Native to iOS and Android Apps Has Never Been Easier](https://www.callstack.com/events/adding-react-native-to-ios-and-android-apps-has-never-been-easier) (May 27 · Webinar): Learn how to easily add React Native to your iOS and Android apps with a modern brownfield setup powered by Callstack’s open-source tooling.
- [Using React Native in Existing Apps for Faster Cross-Platform Features](https://www.callstack.com/events/using-react-native-in-existing-apps-for-faster-cross-platform-features) (Mar 13 · Webinar): Learn how to use React Native in existing apps to speed up cross-platform development without a full rewrite. Watch the expert-led webinar now.