Choosing the right project structure in iOS development can impact codebase health and longevity.Organizing by type keeps the project neat initially but may lead to scattered logic as the app grows.Feature-based structuring groups code by feature, promoting modularity and separation of concerns.Isolating features in separate modules is common in larger teams or enterprise-level apps for better organization.Clean Architecture emphasizes separation of concerns with layers like Presentation, Domain, and Data.VIPER architecture offers strong separation of concerns and testability but can be complex for smaller projects.Hybrid approaches blending different structures or gradually implementing advanced architectures are common in real-world projects.Adapting project structure to team needs and project requirements is key, focusing on clarity and maintainability.Choosing the right structure from the start and evolving it as needed is crucial for scalability and collaboration.Refactoring, modularizing, or adjusting the project structure over time is important for effective project scaling.