Design an enterprise semantic search system over a company's internal documents and tools.

Enterprise search lives or dies on permissions, freshness, and connecting to thirty messy SaaS sources; retrieval quality is table stakes. Learn how to fan out across connectors, enforce per-user access at query time, and blend lexical with vector search for results people trust.

Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.