Understand the complete system boundary Ask where data goes and which actions the whole system allows. Reviewed: 2026-10-03 Source-based teaching example · Fictional data Narration: Microsoft Mark · locally synthesized 00:00:00.000 — What you will learn Ask where data goes and which actions the whole system allows. Visual description: Ask where data goes and which actions the whole system allows. 00:00:06.542 — The idea Map the model, search, logs and tools separately. Local inference does not mean the whole system is offline. Reading and sending need different permissions. Visual description: Map the model, search, logs and tools separately. Local inference does not mean the whole system is offline. Reading and sending need different permissions. 00:00:19.958 — One useful term System boundary. The components, data paths and actions included in the system being reviewed. Visual description: The components, data paths and actions included in the system being reviewed. 00:00:29.500 — A worked example The offering runs inference on an office computer. Embeddings use a remote service, logs use a hosted dashboard, and the agent can send messages. Those paths need separate review. Visual description: The offering runs inference on an office computer. Embeddings use a remote service, logs use a hosted dashboard, and the agent can send messages. Those paths need separate review. 00:00:44.708 — Your turn to think Can the vendor call the entire workflow offline because inference is local? Pause and decide before continuing. Visual description: Can the vendor call the entire workflow offline because inference is local? Pause the video if you need more time. 00:01:02.625 — Why this answer works No. Ask for destination, retention, access and action-authority evidence before sensitive use. Visual description: No. Ask for destination, retention, access and action-authority evidence before sensitive use. 00:01:12.708 — Check 1 Keep remote destinations visible. Visual description: Keep remote destinations visible. 00:01:17.750 — Check 2 Separate read access from sending approval. Visual description: Separate read access from sending approval. 00:01:23.208 — Check 3 Do not infer compliance from appearance or location. Visual description: Do not infer compliance from appearance or location. 00:01:29.375 — Now try a different case Open the lesson and try its different practice case. Use every check in the full task. Watching alone does not mark the lesson complete. Visual description: Open the lesson Try the new case Check and revise The full task and its requirements are in the linked lesson.