What is XIBs?

XIBs (XML Interface Builder) are files used in Apple's development environment (primarily for iOS and macOS) to visually design user interfaces. They allow developers to create and lay out UI elements such as buttons, labels, text fields, and more using a graphical editor (Interface Builder). The visual design is then stored in an XML-based file format. At runtime, the XIB file is loaded, and the UI elements are instantiated and arranged as specified in the XIB. This is now superceded by Storyboards, but XIBs are still widely used, especially for custom views or interface fragments. The documentation link is to show Apple's shift away from this technology.