IBM MQ, or Message Queue, is a messaging middleware product developed by IBM, designed for communication between different applications and systems.
Applications using MQ exchange data in the form of messages, ensuring that information is transmitted asynchronously and can be processed by receiving applications even if they are temporarily unavailable. This makes IBM MQ useful for supporting complex, distributed environments, particularly in industries where a high level of reliability, security, and data integrity is required, such as finance, healthcare, and telecommunications.