This document provides an overview of the display advertising technology landscape in 2013. It outlines the key players in the ecosystem including agencies, demand side platforms (DSPs), exchanges, ad networks, supply side platforms (SSPs), publishers, data suppliers, and various tools for ad serving, creative optimization, measurement and analytics, data management, and more. The landscape shows how advertisers, publishers, and consumers interact through this network of technologies to buy, sell, deliver, and measure digital display ads across platforms.