Deep Learning is a subfield of machine learning that involves the use of artificial neural networks, which are complex mathematical models inspired by the structure and function of the human brain. Deep Learning algorithms are designed to learn from large amounts of data by identifying patterns and features in the data and using these patterns to make predictions or decisions. They are particularly effective at tasks such as image and speech recognition, natural language processing, and decision-making, and are used in a wide variety of applications, including self-driving cars, language translation, and personal assistants.