iCloud storage
When you set up iCloud, you automatically get 5GB of free storage. You can use that storage space to back up your device and to keep all of your photos, videos, documents, and text messages securely stored and updated everywhere.
Is iCloud storage necessary?
iCloud Storage is the total amount of storage space available on iCloud. It's what you pay for. ... You can upgrade your storage to 50GB, 200GB, or 1TB (1 terabyte is 1000 gigabytes), and the monthly fees aren't too bad – but it's not necessary.
What is the iCloud storage used for?
It's a cloud-based, document-oriented file-storage service that keeps your data in sync between various devices: PCs, Macs, iPhones, iPads and so on.