Wi-SUN Alliance is a global, member-based association dedicated to accelerating the adoption of open standards for secure, interoperable Field Area Networks. Wi-SUN FAN technology delivers high-performance, resilient mesh networking designed for large-scale outdoor deployments—supporting millions of devices across AMI, distribution automation, smart streetlighting, and broader smart-city and industrial IoT use cases. With strong security, proven reliability, long-range connectivity, and support for challenging RF environments, Wi-SUN enables utilities and municipalities to modernize operations with confidence. The Alliance’s certification programs ensure multi-vendor interoperability, giving end users flexibility, choice, and a trusted ecosystem of Wi-SUN FAN-certified products.