IOS Architecture Layers

In one Simple Diagram , Writing the different layers involved in IOS Mobile Design architecture.

Every Layer interact with the above layer and below Layer for rendering the UI on IOS Phone. In the diagram itself writing the Programming Language responsible on each layer.

IOS Hardware is based on Unix-Like OS means it is written with some customisation specific to IOS ecosystem on top of Unix OS.

Bottom Core layers are written in C, C++ and Objective-C. While Top layers responsible for App Development are written in Objective-C and Swift.

IOS Design Architecture