BLUF (Bottom Line Up Front)

BLUF (Bottom Line Up Front) is the principle of placing the key answer at the very beginning of an article or section — in the first 50 words. Research shows that content using BLUF has a 62% chance of being the primary citation source in AI Search, and content with facts and numbers in the BLUF is 4.5x more frequently cited than generic introductions.

BLUF follows a three-part structure. First sentence answers the question. Second provides evidence or numbers. The remainder adds context and examples. Each H2 should also start with a BLUF (one sentence, max 25 words). This matters because RAG splits articles into chunks and each chunk is evaluated separately — a chunk with the answer at the beginning scores higher than one with the answer in the third paragraph. BLUF is the opposite of a typical SEO article starting with 'In today's world...' — AI doesn't have the computational power to read fluff.

BLUF is a military command ('Enemy to the north, 200 meters, 30 people, support needed'), not a detective novel with the murderer on the last page. BLUF is the most important component of the AI SEO Alignment Score and directly lowers Cost of Retrieval.