Big Data Analytics: Modern Tools, Technologies, and Data-Driven Innovation is a comprehensive and industry-oriented textbook that provides a strong foundation in Big Data concepts, technologies, and analytics techniques. The book covers essential topics including Hadoop, HDFS, YARN, NoSQL, MongoDB, MapReduce, Apache Hive, Apache Pig, and Machine Learning, supported by practical examples, diagrams, and hands-on exercises. Designed for undergraduate and postgraduate students, educators, researchers, and aspiring data professionals, it bridges the gap between academic learning and real-world applications, enabling readers to develop practical skills for data-driven decision-making in today's digital world.