What production process produces one item at a time or small batches using continuous processing steps?

The production process that involves producing one item at a time or small batches using continuous processing steps is best described as continuous flow. In continuous flow production, materials and processes are organized in a seamless sequence to minimize downtime and enhance efficiency. This method allows for a smooth transition between each stage of production, ensuring that once a step is completed, the materials move directly to the next step without interruption.

This approach is particularly effective in scenarios where flexibility is needed for smaller runs or bespoke items, as well as ensuring consistent quality throughout the production process. Continuous flow is often applied in industries that require a steady pace of production without the need for large quantities typically associated with mass production or batch production methods.

In contrast, other methods like batch production involve larger runs of products made in groups which can result in waiting times between batches. Mass production focuses on generating large quantities of a single product using assembly line techniques, which is not aligned with the concept of producing one item at a time. Just in Time production emphasizes minimizing inventory by producing goods as they are needed, but it does not specifically refer to a process that operates in continuous steps.