Large-Scale Distributed Systems in Display Advertising discusses the technology landscape in display advertising. It notes that approximately 50 billion ads are served daily, equaling 465 terabytes of data moving between 100 advertising platforms worldwide daily. Real-time bidding (RTB) is described as being high throughput, with 500,000 queries per second for the EU, low latency requiring under 100ms to respond per query, and handling big data with over 500 megabytes of data per second that continues to grow as ad spending increases from 2013 to 2019. The document promotes joining Roq.ad and its work in this area.