Artificial intelligence (AI), also known as machine intelligence, is a branch of computer science that focuses on building and managing technology that can learn to autonomously make decisions and carry out actions on behalf of a human being.
AI is superset of ML and DL.
Machine Learning
Machine learning is a branch of artificial intelligence and computer science which focuses on the use of data and algorithms to imitate the way that humans learn, gradually improving its accuracy.
ML is subset of AI and superset of DL.
Deep Learning
Deep learning is a subset of machine learning, which is essentially a neural network with three or more layers. These neural networks attempt to simulate the behavior of the human brain allowing it to learn from large amounts of data.
DL is subset of ML and AI.
Benefits
Lack of sufficient human expertise in a domain (e.g., simulating navigations in unknown territories or even spatial planets).
Scenarios and behavior can keep changing over time (e.g., availability of infrastructure in an organization, network connectivity etc).
Addressing domain specific problems at scale with huge volumes of data with too many complex conditions and constraints.