This document discusses building in-house sourcing and pipelining capabilities using LinkedIn. It describes defining an addressable talent market by identifying relevant skills, locations, and industries. This involves segmenting the market into priority candidates for a 1:1 approach, those to engage through a 1:many approach, and those to take no action on. The document recommends leveraging LinkedIn features like Talent Pipeline to engage candidates at scale and focus recruiter effort on high-value 1:1 prospects. It emphasizes developing long-term relationships and sharing relevant content to nurture interests over time.