A "batch" refers to a specific quantity of items produced or processed at one time. In manufacturing, for example, a batch might consist of a set number of products made together, ensuring consistency in quality and efficiency. This method allows for easier management of resources and time. In computing, a batch can also refer to a group of jobs or tasks processed simultaneously. This is often used in data processing, where multiple operations are executed in a single run, improving performance and reducing the time needed for individual task execution.