iCloud synchronising for photo backup
Hi
I am relatively new to the Apple ecosystem (been an iPad user for years, but recently also bought a Mac mini). I want to see if I can use iCloud to SYNCHRONISE my photo collection from an external HDD. So to be clear, if I delete a photo on my external HDD, its reflected on the iCloud. Is this possible?
thanks in advance and apologies in advance if that is a truly obvious question
Mac mini 2018 or later