Design the architecture for an iOS app with tens of millions of users built by 60 developers. Focus on the module structure and the boundaries between teams.
Split SPM modules into Core (networking, storage, DI, design system), Feature (one per screen, interface separated from implementation), and App (assembly), and let features talk only through interface modules and a router. Track crash, performance, and business metrics per module so the owning team responds to incidents.
iOS system designShort answerIntro
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ArchitectureShort answerAdvanced
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ArchitectureShort answerExpert
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iOS system designShort answerAdvanced
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#observability