The obvious one is that you can handle bigger workloads than you can fit in RAM on a single machine. The more important but less obvious one is that it right-si

The obvious one is that you can handle bigger workloads than you can fit in RAM on a single machine. The more important but less obvious one is that it right-sizes the resources needed for each workload, so you're not running an 8GB job on an 8TB machine, and your manually-allocated 8GB server doesn't OOM when that job grows to 10GB next year.