The term IoT (Internet of Things) has been around for a while. I still remember when I moved from the world of electronics and Industrial Automation to the world of internet connected devices. I struggled to catch the differences between the old M2M (Machine to Machine) and the new trendy IoT technologies. Which applications fall under one domain and which under the other? Over time I learned this is not a zero-one kind of question, but a topic more suited for a Friday-beer with colleagues, rather than a substantial classification.