Automation is the creation of technology and its application to control and monitor the production and delivery of various services. Automation is being used in a many places like as manufacturing, transport, defence, facilities, operations and information technology. For example, in the information technology domain, a software script can test a software product and produce a report also. In other industries, automation is highly improving productivity, saving time and reduce the money , automation means as by electronic devices, reducing human participation, in mechanical device without continuous input from an operator. Act or process of automating. in IT automation is the use of instructions to create a repeated process that replaces an IT professional’s manual work in data centres and cloud deployments. In future days where ever you go Automation is important, without automation you face many problems. If you want to learn automation many tools are available, but Ansible is best Configuration management tool(Automation tool) , As well as easy to learn the code.