The topic is Internet of Things, which is a team prsentation. I am responsible for the third part of the outline (How it works). Please read this website, this is reference, https://medium.com/iotforall/iot-explained-how -does-an-iot-system-actually-work-e90e2c435fe7. Help me write a speech draft based on this reference and outline (please use the tone of prensentation, you can make slight changes in the outline if necessary). Remember not to copy the sentence in this reference, but write it in your own understanding.
