The technology that enables developers to build mobile applications quickly is known as cross-platform development frameworks. Tools like React Native, Flutter, and Xamarin allow developers to write code once and deploy it on multiple platforms, including iOS and Android. This approach saves time and resources compared to developing separate native applications. By providing reusable components and libraries, these frameworks enhance productivity while maintaining a consistent user experience across different devices. This adaptability is crucial in meeting the demand for mobile applications in today's market.