On May 1, 2024, Microsoft officially ended support for all Xamarin SDKs, closing a significant chapter in the history of cross-platform mobile development. For nearly a decade, Xamarin served as a bridge between .NET developers and the mobile ecosystem, allowing them to build native iOS and Android applications using C# and .NET.
When Microsoft acquired Xamarin in 2016, it became a cornerstone of the company’s mobile strategy. Developers could share business logic and UI components across multiple platforms, greatly reducing development time. But as technology evolved, Microsoft began consolidating its tools under the unified .NET ecosystem. The result is .NET Multi-platform App UI (MAUI) — a modern, fully integrated successor to Xamarin.Forms.
With this transition, developers and organizations worldwide are now faced with important decisions about how to sustain, modernize, or migrate their existing mobile applications.
What Exactly Ended with Xamarin?
Let’s break down what’s no longer supported:
Microsoft has ceased:
In short: Xamarin is frozen in time. And the tech world won’t stop evolving around it.
1. Security Risks
Without ongoing security updates, applications built on Xamarin become increasingly vulnerable to attacks.
2. Platform Compatibility Challenges
As iOS and Android continue to evolve rapidly, applications built on unsupported SDKs face inevitable compatibility issues.
3. Rising Maintenance Burden
Continuing to maintain applications on Xamarin introduces operational and financial strain.
1. Unified Development Experience
.NET MAUI eliminates the fragmented project structure of Xamarin by introducing a single-project system. Developers can manage resources, dependencies, and configurations for all platforms in one place. Integrated hot reload capabilities further enhance productivity by allowing real-time code and UI updates
2. Performance and Reliability
MAUI delivers significant improvements in performance through
These upgrades ensure a smoother, more responsive user experience across devices
3. Modernized UI and Architecture
With updated controls, improved theming, and first-class accessibility support, MAUI enables developers to design user interfaces that meet modern standards. It supports familiar architectural patterns such as MVVM and MVU, dependency injection through HostBuilder, and navigation simplification via Shell.
4. Long-Term Support and Ecosystem Growth
With updated controls, improved theming, and first-class accessibility support, MAUI enables developers to design user interfaces that meet modern standards. It supports familiar architectural patterns such as MVVM and MVU, dependency injection through HostBuilder, and navigation simplification via Shell.
The end of Xamarin represents not a loss, but a transformation. Microsoft’s decision to retire Xamarin in favor of .NET MAUI marks a strategic shift toward a unified, future-ready ecosystem designed to meet the demands of modern app development.
For organizations, the key message is clear: continuing to rely on Xamarin is not sustainable. With no updates, security patches, or OS compatibility guarantees, the cost of maintaining Xamarin applications will only grow.
Migrating to .NET MAUI offers a direct path forward — one that ensures long-term stability, improved performance, and alignment with Microsoft’s evolving .NET ecosystem. It is not simply an upgrade; it is the next step in building resilient, high-performing, and secure cross-platform applications for the future.
