Use Cases and Deployment Scope
I use Apple iCloud to share notes, files and also move files from device to device. Of course we also backup our iPhones to the iCloud server, in case a device becomes lost, damaged or nonfunctional. iCloud allows multiple people to edit files simultaneously and gives me good visibility to note changes.
In another role, I use iCloud to sync song transition settings through a mobile DJ app known as OffTrack. OffTrack stores my song transitions in the iCloud, allowing me to make modifications from any device.
Overall, iCloud is good but limited. Other third-party items, such as those run by Microsoft or Google, do not sync well with iCloud.
Alternatives Considered
Microsoft 365, Google Backup and Sync (discontinued) and Dropbox Business
Other Software Used
Microsoft 365, Google Drive, monday.com