Start here
Choose the layer that matches what the issue now needs.
Use Services when the issue is already live and needs clearer decision criteria, stronger review, or more direct support in context.
Use Knowledge when a smaller reusable layer is enough for continuity, scope, and carry-forward.
Use Writing when the next useful move is sharper language, better framing, or a clearer understanding of what is actually blocked.
Use Contact when the issue is real but the right starting point is still unclear.