The design pattern that enforces singularity of an instance is known as?

The Singleton Pattern is a design pattern that ensures a class has only one instance and provides a global point of access to that instance. This means that when the Singleton Pattern is implemented, no matter how many times you attempt to create an object of that class, you will always receive the same instance. This is particularly useful in situations where a single instance is needed to coordinate actions across a system, such as managing a connection to a database or controlling access to a resource.

The essence of this pattern lies in its ability to prevent the instantiation of the class from multiple points in the application, thus enforcing a strict control over the instance's lifecycle. By using private constructors and static methods to access the instance, the Singleton Pattern guarantees that the instance is created only when it is requested for the first time, and it remains the same for all subsequent requests. This design pattern is a staple in object-oriented programming, particularly in languages that support object-oriented design principles.