Cross-Platform Development refers to the practice of creating software applications that can run on multiple operating systems or devices without needing significant changes. This approach allows developers to write code once and deploy it across various platforms, such as iOS, Android, and Windows. By using frameworks like React Native or Flutter, developers can save time and resources while reaching a broader audience. One of the main advantages of Cross-Platform Development is cost efficiency. Companies can reduce development time and expenses since they do not need to create separate versions of an app for each platform. Additionally, it simplifies maintenance, as updates can be made in a single codebase, ensuring consistency across all devices.