Artificial intelligence (AI) has attracted the attention of many and is taking an increasingly crucial role in our modern society. AI machines demonstrate advanced cognitive skills in making decisions, learning, perceiving the environment, predicting certain behavior, and processing written or spoken languages, among other skills. In tandem with AI, "swarm intelligence" is being used to solve complex problems that are beyond the reasoning and problem-solving abilities of humans. This book discusses both AI and swarm intelligence, including their theoretical backgrounds and applications.