As I am an avid photographer & travelling quite a lot, I wanted to sync my Adobe Lightroom library from Macbook to my Microsoft Windows desktop at home with very little/no human intervention. It is also a good thing that both Lightroom versions (mac & windows) share a common file system/structure, this helped alot in synchronizing data from one environment to another.
This HOWTO assumes you already have an AWS account created and running with an IAM user configured.
Put together, the solution would look as such (pardon my poor diagram skills):
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macbook pro (` ). windows desktop