4Rooks brings Composable Systems to the embedded industry. We turn shared functionality into shared code, enabling up to 90% reuse across even wildly different devices. By composing firmware from reusable, auto-generated foundations, development drops from years to months, reducing both cost and risk. ROSA generates ready-to-run architectures, integrates specialised partner modules when needed, and supports devices across hardware generations with long-term updates. This approach aligns with Europe’s priorities: technological sovereignty, sustainable electronics through long lifecycles and reuse, and open ecosystems built on collaboration instead of lock-in. Lower development costs, faster iteration, and stronger innovation pipelines give product teams real strategic leeway. 4Rooks pairs this technology with an adaptive way of working so teams can evolve faster, deliver more reliably, and build products that last. We Scale. Because the future is composable.