Catalogs are printed or digital publications that contain a list of products or services offered by a company or organization. These publications may be used for a variety of purposes, including as a marketing tool to promote the products or services of a business, or as a reference guide for customers or clients.

Catalogs may be divided into different categories or sections, with each section featuring a specific type of product or service. For example, a catalog for a retail store may include sections for clothing, home goods, electronics, and other types of products. Catalogs may also include information about prices, availability, and other details about the products or services being offered.