Data Binding is a programming technique that connects user interface elements to data sources, allowing for automatic updates between them. When the data changes, the UI reflects those changes without requiring additional code to update the display. This simplifies the development process and enhances user experience by ensuring that the information presented is always current. There are two main types of data binding: one-way binding and two-way binding. In one-way binding, data flows in a single direction, from the data source to the UI. In contrast, two-way binding allows changes in the UI to update the data source as well, creating a dynamic interaction between the two.