I found this post "How Windows Update works"(https://docs.microsoft.com/en-us/windows/deployment/update/how-windows-update-works#downloading-updates), It really helped me a lot, but I still have some questions about it.
1.How does Orchestrator(or might be Arbiter) determine which updates should apply to my computer? According to what? The manifest files? And what's inside the manifest files?
2.Is there any "sequence" of updating windows patches from WU or WSUS? Will it run automatically in sequence?
3.Are there any "dependency" issues between Bundle update and Child update? If WU client has already downloaded/installed one of Bundle update, but hasn't done reboot yet, will it's Children(Child update) be downloaded/installed?
I would appreciate any help.