What is the a programming technique based on defining data as objects?

The programming technique based on defining data as objects is known as Object-Oriented Programming (OOP). In OOP, data and behavior are encapsulated within objects, which represent real-world entities. This approach promotes code reusability, modularity, and easier maintenance through principles such as encapsulation, inheritance, and polymorphism. By organizing code into objects, developers can create more intuitive and manageable software systems.