Migrated a cross-platform streaming application from Xamarin to React Native with zero downtime

Solutions

Consultative proof-of-concept: React Native

We ran a side-by-side proof-of-concept, benchmarking .NET MAUI against React Native for build stability, package ecosystem, and future talent availability. The data showed React Native offered faster iteration, broader community support, and a consistent experience across iOS and Android. Following our consultation and technical evaluation, UTR chose to proceed with this approach.

Incremental front-end migration

• Code audit and abstraction: Separated business logic from UI to enable reuse.
• Component re-engineering: Rebuilt screens with React Native components while matching the original look-and-feel.
• Consistent iOS and Android experience: Added small platform-specific tweaks while keeping one shared logic layer for easier upkeep.
• Native bridges: Integrated existing Swift/Kotlin video-capture modules and Firebase/AWS services.
• Offline-first workflow: Preserved local-queue logic so videos recorded without connectivity upload automatically once online.
• Continuous regression testing: Implemented automated testing to ensure consistent functionality throughout phased releases.
• Continuous regression testing: Conducted regression testing to ensure optimum performance throughout phased releases.

Successful app migration leads to platform-wide partnership

The smooth mobile app migration built trust that led UTR to partner with us on their web portal and backend systems. Current upgrades include:

• AWS security foundation: Implemented baseline security controls that were previously missing.
• AWS component migration: Moved legacy services to modern, best-practice equivalents.
• Database server upgrade: Raised the engine version for better performance and easier maintenance.
• Media-processing pipeline: Videos stored in Amazon S3 are processed by AWS MediaConvert, which standardizes them to a fixed resolution and shrinks file sizes by up to 90% without any perceptible loss in quality. The workflow then adjusts frame rates as needed and applies watermark overlays during transcoding.
• Planned enhancements: In the next phase, we are going to introduce push notifications alongside other improvements to further enhance the user experience.