This document is a technical report that outlines the Buydex model developed by Dun & Bradstreet (D&B), which ranks businesses based on their overall spending capacity. The Buydex model is available in several variations: Standard, Industry Specific, and Custom. Each version serves different purposes, such as assessing individual business locations or specific industries. The report describes how Buydex classifies customers and prospects using a scoring system from 0 to 99, where lower scores indicate lower spending capacity. It details the methodology behind the model, which utilizes D&B's proprietary Detailed Trade data to evaluate spending. Additionally, the document presents practical applications of Buydex, emphasizing its role in optimizing sales effectiveness and enhancing market segmentation. The report also mentions D&B's advanced analytics portfolio, which includes tools for assessing decision-making power and evaluating industry-specific needs.