In this white paper, we will first outline Chiyoda Corporation's digital solution, EFEXIS, and describe our vision for autonomous operation. Next, we will describe the technologies and proven or expected benefits from the EFEXIS solutions. Our solutions for operation optimization and improving availability include LNG Plant AI Optimizer, FCC AI Optimizer, CDU Optima, Foaming Prediction AI System and Asset Monitoring AI System. Finally, we will discuss future prospects for EFEXIS solutions.