What is the usage, and why use plural?
The context is here:
The automatic support for long - running workfl ows that the WF infrastructure provides is the most evident benefi t. The execution of a long - running workfl ow can be suspended or resumed on multiple points, so the internal state of the execution and activities must be preserved. WF automatically takes cares of saving the workfl ow state through the use of confi gurable providers. Therefore, you do not need to worry about these details.