The Smart Street Lighting ecosystem spans three functional layers. Upstream, raw material and component suppliers provide LEDs, sensors, and power‑management chips that define system performance and cost structure. Midstream actors—technology providers, system integrators, and distributors—assemble hardware, embed connectivity, and deliver turnkey solutions through engineering, procurement, and construction (EPC) contracts. Downstream, municipalities, private developers, and facility managers adopt the solutions, driving revenue and data generation that feed back into product refinement and service contracts. Value is captured primarily through hardware sales, long‑term service agreements, and data‑as‑a‑service models, while regulatory incentives and utility tariffs shape overall economics.