The document discusses how content marketing, inbound marketing, search engine optimization (SEO), and social media have evolved and blended together. It explains that the goal of SEO used to be to get ranked at the top of search engine results pages (SERPs) through on-page and off-page optimization techniques. However, social media has now become a key factor in SEO success as content spreads and is discovered through social sharing. The document provides strategies for developing an effective content marketing approach, including defining goals, assessing resources, choosing tools, creating policies, and focusing on creating high-quality, shareable content.