A single query interface across every knowledge source in the organisation, Confluence, Google Drive, SharePoint, Slack, Jira, GitHub wikis, and internal SQL databases, with results ranked by semantic relevance to the question rather than keyword frequency. Connector architecture: one ingestion module per source type, each normalising documents to a common schema (content, title, source, author, last modified, permission groups) before embedding and indexing. Permission-aware retrieval enforced at query time: the user's group memberships are fetched from your identity provider (Okta, Azure AD, Google Workspace) and used to filter the candidate result set before any re-ranking, so users never see documents their account cannot access, and the permission check adds under 50ms to latency. Unified relevance scoring: documents from Confluence and Slack rank against each other on semantic similarity to the query, so the most relevant Slack thread surfaces above a less-relevant Confluence page even though they come from different sources. Result UI: each result shows source type icon, document title, the most relevant passage highlighted, author, and last-modified date, with filters for source, team, date range, and document type applied client-side without a new retrieval round-trip. Zero-result rate monitoring: queries returning no results above the confidence threshold are logged for analysis and used to identify knowledge gaps where content does not yet exist.