The "Publish-Subscribe" model is a messaging pattern used in computer systems where messages are sent from a publisher to multiple subscribers. In this setup, publishers create messages without needing to know who will receive them, while subscribers express interest in specific messages. This decouples the sender and receiver, allowing for more flexible communication. In this model, a central component called a message broker often manages the distribution of messages. When a publisher sends a message, the broker ensures that all interested subscribers receive it. This approach is commonly used in applications like real-time notifications and event-driven architectures.