Description: JSP tag libraries are reusable components that can be used in JSP (JavaServer Pages) to simplify the development of web applications. These libraries allow developers to encapsulate presentation logic and functionality into custom tags, making it easier to create and maintain complex web applications. By using tag libraries, programmers can avoid code duplication and improve the readability of their pages, as tags can be used similarly to HTML elements. Additionally, these libraries can include business logic, data access, and other functionalities, allowing for a clear separation between presentation and application logic. This is particularly useful in agile development environments, where collaboration and rapid iteration are essential. JSP tag libraries are also compatible with various platforms and technologies, making them a versatile tool in modern software development.