[bigiain]

Slow internet and/or multiple macOS devices... (3 Apple laptops, 2 mac minis, and an iMac hanging off my ADSL...)

[infogulch]

The ability for windows 10 updates to be shared across computers in a network (signatures are still verified of course) doesn't sound so bad in cases like this.

[josh64]

High Sierra has an option for a Mac to cache updates and serve them over the local network to other macs.

This feature used to only be in macOS Server but is now in normal macOS too.

[bigiain]

Really? Cool! Thans for pointing it out. (goes googling for how to make sure I'm using this...)