Modern iOS App Architecture: MVC, MVVM, and Beyond As iOS applications grow in complexity, architecture has become one of the most important factors influencing code quality, scalability, and long-term maintainability. What once worked for small apps or prototypes can quickly turn into a tangled codebase that slows down development and increases the risk of bugs. Modern iOS app development  is no longer just about making screens work—it’s about structuring code so teams can e