This paper explores the theories and practical applications of AI, AI-based RPA and RPAn in enterprises as well as in organizations. Recent advanced and modern techniques of AI, AI-based RPA and RPA are also presented and discussed in this study. In addition, this study also presents individual and combined solutions in applying AI-based RPA for small-cap companies to leading and multinational companies. Research results show that AI-based RPA technology has very good applications to replace human activities in many different fields and industries, such as economics, administration, business, banking, marketing, and medical care.