Which diagram can document a business process effectively?

A variety of diagramming techniques can effectively document a business process, and both flow charts and swim-lane diagrams are among the most commonly used.

Flow charts provide a visual representation of the steps involved in a process, showcasing the sequence of activities, decision points, and outcomes in a clear and linear format. This makes them particularly useful for illustrating straightforward processes where the flow is easy to follow.

Swim-lane diagrams, on the other hand, enhance this understanding by organizing the steps into "lanes" that represent different participants or departments involved in the process. This format allows for a more complex depiction that can illustrate how various roles interact over time and where responsibilities lie.

Both types of diagrams serve different purposes and can be utilized depending on the complexity and nature of the business process being documented. Consequently, the ability to use both flow charts and swim-lane diagrams grants flexibility and depth in process documentation, making the answer encompassing all effective methods appropriate.