Sequential Consistency is a memory consistency model used in computer science to ensure that the results of operations in a multi-threaded environment appear as if they were executed in some sequential order. This means that all operations from all threads are viewed in a single, consistent sequence, making it easier for developers to reason about the behavior of their programs. In a system that adheres to Sequential Consistency, if one operation is completed before another starts, all threads will see this order. This model simplifies debugging and reasoning about concurrent programs, as it provides a clear and predictable framework for understanding how operations interact across different threads.