A Message Queue is a middleware component that facilitates communication between distributed systems by enabling asynchronous message passing. It acts as a buffer, storing messages from senders until they are consumed by receivers, allowing for decoupled and scalable architectures.

This decoupling enhances system resilience and fault tolerance, as components can continue operating independently even if others fail. Message Queues support various messaging patterns, including point-to-point and publish/subscribe, catering to diverse communication requirements.

Additionally, they provide features like message persistence and delivery guarantees, ensuring reliable message delivery even in the face of network failures or system crashes.

In summary, Message Queues play a critical role in building robust and scalable distributed systems, facilitating asynchronous communication and enhancing system reliability.

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