IDX, or Internet Data Exchange, is a system that allows real estate brokers to display listings from other participating brokers on their own websites. IDX is a way for brokers to share information and make it easier for consumers to search for properties. Real estate brokers need IDX because it allows them to expand the number of listings they can offer to their clients. By participating in IDX, brokers can access listings from other brokers in their area, which can give their clients a more comprehensive view of the local real estate market. This can be especially useful for brokers who work in smaller markets, where the number of listings may be limited. In addition to increasing the number of listings available to clients, IDX can also help brokers attract more visitors to their websites. By offering a comprehensive search tool for properties, brokers can differentiate their website from those of their competitors and attract more potential buyers and sellers. Overall, IDX is a useful tool for real estate brokers because it allows them to expand the number of listings they can offer to their clients, improve their websites, and differentiate themselves from their competitors.