What Is an AI Knowledge Base, and Does Your Business Need One?

How it works

1. Your documents are collected from shared drives, help centres, PDFs and websites.
2. They are split into sections and indexed so the AI can find the right passages.
3. When someone asks a question, the AI finds the most relevant passages and writes an answer from them.
4. The answer links to the source, so the person can read more or check it.

This approach, often called retrieval-augmented generation, keeps answers grounded in your own content instead of the AI's general knowledge.

Who benefits most

• Growing teams where new staff ask the same questions repeatedly.
• Support teams who search several systems for each answer.
• Businesses with detailed products or policies, such as insurance, software or manufacturing.
• Companies using AI chat that need accurate, approved answers for customers.

What makes a good knowledge base

• Up-to-date documents, with old versions removed.
• Clear ownership: someone is responsible for each topic.
• Access controls so people only see what they should.
• Regular reviews of questions the AI couldn't answer, which show gaps in your documentation.

Getting started

Start with one area, such as customer support policies or onboarding documents, test it with real questions, then expand. Learn more about AI knowledge bases or see how they work in Microsoft 365.