What is the difference between Artificial Intelligence, Machine Learning and Deep Learning?

Ever caught yourself wondering what artificial intelligence (AI), machine learning(ML), and deep learning (DL) are and how they are different? Well, let me tell you that you are not alone. These three terms are so frequently used together, dare I say, rather interchangeably that one begins to think they are all the same. No, they are simply not. However, they are very closely related.