If the workload is inbound lead handling, its workflows are things like: answer a new lead in minutes, enrich and route it to the right owner, follow up until it books or dies, send the weekly pipeline report. Each has a moment it starts, steps it takes, and a result you can inspect.
Every time a workflow completes, it produces a work receipt showing the input, the steps taken, and the output. That is how you verify the work instead of trusting a dashboard.
Workflows are the unit Marshal engineers configure and tune, not the unit you buy. You never pay for a workflow by itself, and you never pay per run. Workflows travel in bundles called workloads, and the price lives there.