The rapid growth of digital technologies has led to an unprecedented increase in data generation, commonly referred to as Big Data. At the same time, Artificial Intelligence (AI) has emerged as a powerful tool capable of extracting meaningful insights from vast and complex datasets. The integration of Big Data and AI has revolutionized multiple sectors, including healthcare, finance, education, manufacturing, and governance. This research paper explores the concept of Big Data and Artificial Intelligence, their relationship, key technologies, applications, challenges, and future prospects. The study highlights how AI-driven Big Data analytics enhances decision-making, operational efficiency, and innovation while also addressing ethical, privacy, and security concerns.