This book covers various topics related to economics and the social sciences, such as artificial intelligence, sustainability, ESG, and tax administration. The respective contributions provide insights and perspectives on the current challenges and opportunities in these fields, while also showcasing the latest research and innovations from scholars and practitioners around the world. The book is based on the papers presented at the 6th International Conference on Economics and Social Sciences, ICESS 2023, which was held in Bucharest, Romania.