An RFC (Request for Comments) is a structured technical proposal document designed to drive consensus and document decisions before implementation. Originating in internet standards (IETF RFCs), the RFC format has become standard in many tech organizations for proposing architecture changes, new services, API designs, and significant refactors. Well-written RFCs improve decision quality, reduce rework, and create organizational memory of the reasoning behind technical choices. Strong RFC writing separates good engineers from exceptional technical leaders. RFCs enable you to propose large-scale changes, gain buy-in from colleagues, and influence architecture. Organizations that use RFCs report 30–50% reduction in design rework and faster onboarding. RFC expertise is particularly valued in senior and staff engineering roles, where shaping technical direction is a key responsibility.