Batch processing is a pervasive workload pattern, expressed by a distinct application organization and 		execution model. It is found across virtually every industry, applied to such tasks as statement 		generation, bank postings, risk evaluation, credit score calculation, inventory management, portfolio 		optimization, and on and on. Nearly any bulk processing task from any business sector is a candidate for 		batch processing. 		Batch processing is typified by bulk-oriented, non-interactive, background execution. Frequently long- 		running, it may be data or computationally intensive, execute sequentially or in parallel, and may be 		initiated through various invocation models, including ad hoc, scheduled, and on-demand. 		Batch applications have common requirements, including logging, checkpointing, and parallelization. 		Batch workloads have common requirements, especially operational control, which allow for initiationof, and interaction with, batch instances; such interactions include stop and restart.