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1. A method of processing data in large batches without user interaction
2. The process of creating a virtual version of computing resources to improve efficiency and flexibility
3. The simultaneous execution of multiple tasks to increase performance and efficiency
4. Large, powerful, and expensive computers used primarily by large organizations for critical applications
5. The ability of a mainframe system to remain operational without interruption for long periods
6. A method of connecting multiple mainframes to work together as a single system
7. Older mainframe systems that are still in use due to their critical functions and high reliability