X++ Programming Language is an object-oriented programming language used primarily in Microsoft Dynamics 365 Finance and Operations. It is designed for enterprise resource planning (ERP) development and supports data manipulation, business logic implementation, and application customization. X++ combines features of traditional programming languages with database query capabilities, allowing developers to interact directly with SQL-based data. It supports object-oriented concepts such as classes, inheritance, and polymorphism, along with transaction handling for reliable business processes. X++ is widely used to extend and customize ERP modules like finance, supply chain, and operations. It helps organizations build scalable and integrated enterprise business solutions.