Artificial intelligence, one of the Industry 4.0 technologies, is expanding its place in our lives day by day. Artificial intelligence is used effectively in many areas of life today. It is used to make people's jobs easier, increase efficiency, solve complex problems and make new discoveries. For example, artificial intelligence is used in technology and innovation, industry, healthcare sector and education. The basis of artificial intelligence is expert systems, robotics, natural language processing, computer vision, speech and understanding. Techniques of artificial intelligence include machine learning, artificial neural networks, deep learning, expert systems, genetic algorithms and fuzzy algorithms. This study has been prepared to explain in detail the definition, foundations and techniques of artificial intelligence, which is used in almost every field today. In this context, the definition of intelligence and artificial intelligence, strong and weak artificial intelligence, the history of artificial intelligence, the basics of artificial intelligence and the techniques of artificial intelligence are explained. In the last section, a general evaluation was made.