Practical Internet of Things Security - Second Edition

Load balancing 

Load balancers ensure that traffic from IoT devices is sent to available servers, and that individual servers are not overwhelmed by spikes in traffic.

IoT services may be hosted in the cloud. In these instances, consider deploying load balancers in front of your services and brokers. CSPs offer standard load-balancing tools at different pricing rates. You can configure your IoT clients to authenticate securely to your infrastructure across a load balancer.

For example, using F5's BIG-IP product, MQTT IoT clients provisioned with X.509 certificates can terminate the secure connection at the load balancer, which then initiates a secure connection to backend MQTT brokers. In this scenario, BIG-IP would extract and validate ...