The programming paradigm based on the concept of objects is known as object-oriented programming (OOP). In OOP, software is structured around objects, which are instances of classes representing real-world entities. This approach promotes modularity, code reuse, and easier maintenance, as it allows developers to encapsulate data and functionality within objects. Key principles of OOP include inheritance, encapsulation, and polymorphism. Popular OOP languages include Java, C++, and Python.