What's the difference between build-in pathfinding and 3rd part tools?

Hello,
what is the difference between the build-in pathfinding-tool of Unity and such as A* Pathfinding Project Pro?

Thank you

 

No one can help?

 

Unity's build in tool is a Nav Mesh. This is a baked, geometric representation of navigation derived from your scene. It's a great fit for first and third person games where the level is pre-authored. Unity nav mesh is not great for games with tons of units (i.e. RTS) games with large exterior spaces (i.e. MMOS) or games with procedural levels (i.e. diablo or minecraft). The asset store pathfinding programs are designed to provide solutions that are strong where NavMesh is weak.