Automation and advancement due to Artificial Intelligence (AI) is changing the world. Almost all domains are affected by this technology. This chapter talk about the different domains where AI has influence a lot and we find major changes in upcoming processes and produces. First we try to understand about what is AI and its other related areas like Machine Learning and Deep Learning. This advancement in the technology has changed a lot so now world is moving from industrial era to automation era. The timeline of the automation is very interesting where use of AI and other technology has impact the world. Domains like finance, security, health care, justice, transportation and logistics are affected and we have seen many changes due to automation in last two decades. Education and entertainment industries are also changed with online platform of learning and OTT platforms respectively. AI has changed a model of national security, new systems using AI is providing a cognitive way hence, military power is increased through AI and robotics.