iCloud is a service that stores important data on Apple devices. When your iCloud storage is running low, you'll need to free up some space. It lets users to save documents, movies, pictures, e-mails, calendars, and other types of data. Unusual behavior might occur, and we may lose important files or data. To preserve our data, we'll recommend the best method to Backup iCloud to External Hard Drive. iCloud is one of the most effective systems for storing and securing your data.