Most analyzers in the industry predicated that there will be more than 50 billion devices by 2020, connected to the Internet. This is described as the era of Internet of Things (IoT). The IoT is a big collection of smart sensors, networks, servers, and services that interact among them. This trend applies to all sectors or markets, and it is a way to automate, control, and manage factories, homes, transportation, energy, medical/healthcare facility, etc. All layers of networks, from applications, middleware, connectivity, and devices, will contribute to realizing the full power of IoT. For edge connectivity, the intelligent gateways play a major role communicating in between the devices and the cloud, collecting data from the devices for analysis, and forwarding the instructions from the upend servers to activate the devices.