Data binding is the process of linking data sources, such as databases, APIs, or data models, to user interface elements, such as forms, tables, or charts, to automate the synchronization of data between them. Data binding can simplify web development by reducing the amount of code needed to update, display, or manipulate data, and by providing real-time feedback to users. Data binding can be implemented using various frameworks and libraries, such as Angular, React, or Vue, and can involve different types of binding, such as one-way binding, two-way binding, or event binding. Data binding can help improve web application performance, scalability, and maintainability.