Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The user requirements document (URD) is a document used in software engineering that specifies the requirements the user expects from software to be constructed in a software project. An important and difficult step of designing a software product is determining what the customer actually wants it to do. This is because often the customer is not able to communicate the entirety of their needs and wants, and the information they provide may also be incomplete, inaccurate and self-conflicting. The responsibility of completely understanding what the customer wants then falls on the providers of the product. Once the required information is completely gathered it is documented in a URD, which is meant to spell out exactly what the software must do and becomes part of the contractual agreement. A customer cannot demand features not in the URD without renegotiating and a developer cannot claim the product is ready if it does not meet an item of the URD.

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