Custom controls refer to user interface elements in software applications that are designed and developed specifically to meet unique requirements or provide enhanced functionality beyond the standard controls provided by the platform. These controls are typically created by developers to tailor the user experience and improve usability. Custom controls offer developers the flexibility to create visually appealing and interactive elements that align with the application's branding and design guidelines. They can range from simple enhancements to existing controls to complex, highly specialized components. Custom controls enable developers to craft user interfaces that are intuitive, efficient, and aligned with the specific needs of the application and its target audience.