iOS Architecture: Necessity for Developer.

Although development occurs predominantly at the higher layers and developers are urged to keep development at the higher layers, programmers who are intimately familiar with the iOS structure produce superior quality applications in both design and implementation.

Knowledge of frameworks and technologies provides a developer with a comprehensive understanding of what they can do with their apps.

The available technologies limit an application's capabilities. The available technologies define the boundaries of a developer's ambition. Before touch and gesture recognizer technologies, for example, input had to be via buttons.

A developer's understanding of frameworks and technologies enables him or her to construct functional apps with appealing user interfaces.

The available technologies and frameworks should help a developer create good applications. For example, depending on your desire a music app basic functionality can be afforded by the Core Audio family, streaming by AirPlay, The AV Foundation framework for sophisticated tasks. Graphics and Video also in the same way. The UIKit text handler should not be used in word processors but instead, the Core Text framework should. This calls for an in-depth knowledge of the layers to familiarize with the technologies involved in application development.

Provides a general background to which the programmer adds.

Services provided for example in the Core OS layer are items the programmer may rarely be called to interaction. However, since it requires him to utilize this services to create a fully functional app. It helps the programmer to know the technology which he is utilizing. The peer to peer services in the Touch layer, for example, rely on Bluetooth Low Energy framework in the Core OS layer. Having a general understanding would help him perhaps even slightly in debugging.

It is established, therefore, that knowledge in the architecture of OS would only help him be a greater programmer.