Stop building your modular mobile app the slow way
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Sequential CI pipelines become a major bottleneck as modular mobile apps grow. The fan-out/fan-in build topology solves this by running independent module builds in parallel and assembling the host app only after all modules finish. Three implementation approaches are covered for Codemagic: a pure REST API coordinator script, Nx Cloud Distributed Task Execution with Codemagic VMs as agents (the only option supporting iOS builds), and single-VM parallelism with Nx or Turborepo. A cost breakdown for a 15-developer React Native super-app shows ~$914/month for the full stack, with an estimated ROI of over 250 engineering hours reclaimed per month.
Table of contents
What the problem actually looks likeThe pattern that fixes it: fan-out/fan-inHow to implement it on CodemagicThe iOS questionWhat This Actually CostsWhat That Investment Buys You (The Real ROI)When this approach is the right fitThe bottom lineSort: