Internet of things or IOT is moving from buzzword to a reality. It is finding its niche in sectors like home automation, health care, automobile and in various industrial sectors. Based on various surveys its expected that the connected devices market could grow from 14 billion devices today to the range of 50-100 billion connected devices by 2020. This would be a massive growth. There is no doubt that billions of connected devices will redefine the way we live our lives through the concept of connected homes, connected vehicles to connect cities. There are some challenges in IOT that has to be addressed for faster adoption and to make this dream a reality.