Tree Structure is everywhere

Tree structure is everywhere:

1 ) Site map (structure of web pages)

2 ) DOM tree

3 ) folder structure in a computer

4 ) Process tree in Linux

5 ) Domain tree

6 ) The structure of routes in the backend & URLs in the frontend (and one specific URL can match one specific route, and multiple URLs with different URL parameters can be route to the the one same route).

Reference :

How to show process tree in Linux

https://www.simplified.guide/linux/process-view-tree

Domain Trees

https://docs.microsoft.com/en-us/windows/win32/ad/domain-trees