The document outlines the marketing stacks and strategies of three companies: Demandbase, 99designs, and Hipmunk, focusing on B2B advertising, website personalization, and customer engagement. It details the various tools, technologies, and marketing techniques employed by these companies, including analytics, content marketing, CRM, and social media strategies. Each company's marketing team structure and functions are also described, emphasizing their roles in acquisition, brand communication, and performance optimization.