What is the function of Docker Swarm?

Docker Swarm serves the crucial function of managing a cluster of Docker engines as a single system. This orchestration tool allows users to deploy and manage a group of Docker containers across multiple host machines seamlessly, enabling high availability and scalability for applications. With Docker Swarm, tasks and resources can be distributed across the cluster, allowing for efficient use of computing resources and simplifying the management of containerized applications.

In a Swarm setup, nodes can be designated as managers, which handle the orchestration tasks, or as workers, which run the application containers. This capability empowers organizations to create resilient applications that can automatically recover from failures and balance loads dynamically.

Other options focus on different aspects of Docker technology, such as image creation, network configuration, and file building, which are fundamental but unrelated to the specific function of cluster management provided by Docker Swarm.