Description: An object expression is a construct in programming that allows for the concise and direct creation of instances of objects without the need to explicitly define a class. These expressions are particularly useful in object-oriented programming languages, where the goal is to encapsulate data and behaviors. By using an object expression, one can define an anonymous object that can contain properties and methods, facilitating the creation of objects in situations where a full class definition is unnecessary. This feature allows developers to write cleaner and more readable code, as it avoids the overhead of defining classes that will only be used in a specific context. Object expressions are especially common in languages like JavaScript, Java, and C#, where they are used to create temporary objects or to implement design patterns such as the strategy pattern. In summary, object expressions are a powerful tool in modern programming, allowing for greater flexibility and efficiency in object creation.