Notion is an all-in-one connected workspace that brings notes, documents, knowledge bases, databases and project workflows into a single flexible environment with built-in AI capabilities. It surfaces AI features such as writing assistance, summarization, and semantic search directly inside pages and databases, while supporting collaborative editing, granular permissions, and extensive templates. Notion also provides developer-facing tooling (APIs and SDKs) and desktop/mobile apps to integrate workspace data with external systems, enabling teams to centralize work, reduce context switching, and turn static information into actionable knowledge.