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Scaling React Native at Zalando - How Brownfield Migration Paid Off

Callstack Engineers via YouTube

Overview

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Discover how Zalando successfully integrated React Native into their decade-old mobile architecture in this comprehensive webinar featuring engineers from both Zalando and Callstack. Learn the complete strategy behind one of the largest React Native brownfield migrations, including how the team built consensus across native and web development teams, implemented modular and safe architecture patterns, and identified key performance indicators that demonstrated React Native's long-term business value. Explore the technical challenges encountered during migration, from building React Native as a library to implementing dependency injection and communication layers between platforms. Gain insights into their migration strategy, internal beta testing processes, AB testing methodologies, and platform-specific rollout approaches. Understand how they addressed cross-platform UI and styling considerations while maintaining code quality and performance standards. The session covers real-world lessons on migration strategy, performance validation techniques, and future planning for React Native implementation at enterprise scale, providing actionable insights for organizations considering similar cross-platform mobile development transitions.

Syllabus

00:00 Welcome and Introductions
00:42 Overview of today's topic: Zalando migration
01:09 Meet the team: Callstack and Zalando
03:43 Agenda and motivation for cross-platform
07:36 Choosing React Native: Benefits and considerations
12:19 Technical challenges and solutions
24:53 Migration strategy and implementation
37:13 Internal beta testing and AB tests
38:32 Platform-specific rollouts
39:31 Technical deep dive: Architecture and challenges
41:50 Building React Native as a library
45:51 Dependency injection and communication layers
51:33 Cross-platform UI and styling
58:21 React Native integration and future plans
01:10:00 Community contributions and closing remarks

Taught by

Callstack Engineers

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