The document discusses the impact of big data on SEO, highlighting three critical questions SEO professionals must consider: who their competitors are, the size of market opportunities, and what areas to focus on first. It outlines traditional SEO challenges, emphasizes the need for comprehensive keyword research, and suggests using big data to identify competitor keywords and market trends effectively. Additionally, it touches on the importance of proper data storage solutions and technologies required to handle the complexities of big data in SEO.