This book provides comprehensive recommendations and insights into the fundamentals, innovations, and industrial applications of microalgae-based processes. Covering both upstream and downstream processes, it addresses challenges and solutions in scaling up microalgae technologies from laboratory to industrial uses. Key topics include cultivation techniques, bioreactor designs, harvesting and drying methods, and applications in food, biofuels, and environmental management. Special emphasis is placed on market trends, socio-political factors, regulatory frameworks, innovation, and sustainability, ensuring a holistic understanding of this rapidly evolving field. In addition, the final chapters are dedicated to real-world cases, highlighting pilot projects and large-scale installations that tackle practical challenges in engineering and commercialization. As an interdisciplinary science, microalgae technology has significant relevance in academia, industry, and government, driving innovation and contributing to a growing billion-dollar global market for high-value products. This book serves as an essential resource for students, researchers, scientists, engineers, and professionals seeking to deepen their knowledge and stay updated on the latest developments in microalgae research and applications.