Messaging systems are software applications that enable communication between different components of a system or between users. They facilitate the exchange of messages, which can be in various formats such as text, images, or files. These systems are essential in distributed architectures, allowing different services to communicate asynchronously, improving scalability and reliability. Common examples of messaging systems include RabbitMQ, Apache Kafka, and Microsoft Azure Service Bus. They often support features like message queuing, routing, and delivery guarantees, ensuring that messages are sent and received in an orderly manner. This helps organizations manage workflows and integrate applications efficiently.