Interlibrary Loan (ILL) is a service that allows library users to borrow books, articles, and other materials from libraries outside their own. If a local library does not have a specific item, patrons can request it through ILL, and the library will arrange to obtain it from another participating library. This service expands access to a wider range of resources, making it easier for researchers, students, and the general public to find the information they need. ILL typically involves a simple request process, and items are usually delivered to the patron's home library for pickup.