Quick answer
Blender sculpting lets users shape objects with brushes instead of only editing vertices and faces. It is useful for organic models, concept forms and detailed surface work.
Brush workflow
Sculpting brushes push, pull, smooth and define forms. They help artists explore shape more freely than technical mesh editing.
Masks and forms
Masks protect parts of a model while working on other areas. This makes it easier to control details and larger forms.
From sculpt to model
Sculpted objects often need cleanup, retopology or optimized geometry before animation, export or game use.