Artificial Intelligence: What is it in reality ?

Artificial intelligence (AI) is the simulation of human actions and intelligence by computers. It is a combination of many technologies such as Machine Learning, Natural Language Processing and Applied Intelligence. Reactive machines don't have the ability to learn and adapt, hence they are not used for memory based scenarios and can be used for automatic responses to a limited set of inputs. Limited memory machines are capable of learning from historical data and make decisions. They use deep learning techniques for training and storing memory for these machines.