Online reviews is a central concept in the study of electronic word-of-mouth and user-generated content, referring to publicly available evaluations and feedback about products, services, or entities disseminated through digital platforms. This research domain investigates their characteristics, generation, dissemination, and profound influence on consumer decision-making and organizational outcomes. Key aspects studied include their composition (textual and numerical data), role in shaping consumer trust and purchasing intent, impact on organizational reputation and market performance, and the development of methods for their analysis (e.g., sentiment analysis). Its academic significance stems from their pervasive role in the digital economy, providing empirical grounds for understanding online behavior, information flow, and strategic implications across various sectors.