Security and scalability are major concerns in IoT deployments, and IoT gateways address both. These gateways encrypt data before transmitting it to the cloud, protecting IoT networks from cyber threats. IoT gateways also support multiple devices and protocols, ensuring seamless scalability. Businesses use IoT gateways to manage large-scale IoT deployments across industries. By implementing firewall protection and authentication mechanisms, an IoT gateway prevents unauthorized access. It acts as a secure communication hub, improving data integrity in IoT systems.