Now - for the most part, iMac, iPhone, iPad function as one in many areas. That's a first for me, despite using all of these separately and in a series of upgrades & updates since 2012
By saying, one in many areas, Can you pls kindly eloberate in what term ? Example maybe ?
What seems to be 'improved a lot' since the Big Sur Update is A/ messages & Reminders now synch properly and quickly. Anything working through iCloud now is fast again and most other functions on iMac is like new. I updated from Mojave, which my iMac shipped with new ( I purchased it a year ago. Then I tried to update in to Catalina 3 times unsuccessfully and simply gave up as it was functional but disappointing for a brand new machine. Remember though that I live where supply chain can be shakey and support is simply not always there for many things people in the big countries have long been used to. So if something is working 'acceptably' one is often out on a limb if wishing to 'fine tune'.
B/ As an aside, when I did the update, al my other devices were up to date, but I did follow the prompts to enable 2 factor authentication on my Apple ID. I also changed the password. Those actions generated a host of other prompts and warnings which I dealt with one by one, some of which might have been things which wee 'playing the fool' with the syncing and general performance. So at least for now I'm again a happy camper.!!
Thank you for your explanation
All I noticed with BigSur are ...
Odd name
Fresh interface ios alike in some way
Better os management (maybe ? Dunno)
Some possibility that iOS app can be available for macOS as well
For your point B, I think the 2FA and such notification already available since previous version
Anyway, it’s good you are happy. That makes me happy as well LOL