Among the various Shape Effects available in PowerPoint, probably the most subtle one is the Soft Edges effect. This effect adds an eaten-up, feathered edge to a selected shape. Soft Edges work best with larger shapes, especially if you use some of the larger Soft Edge variations available. PowerPoint provides some ready-to-use Soft Edge presets.
Learn how to apply soft edge effects to shapes in PowerPoint 2016 for Windows.

