With the recent announcement from Apple that the company will be improving iCloud for storage purposes, it's good to know what a paid option will get you and which Cloud storage service makes the most sense to use. Here's the breakdown of the prices and storage space for Cloud storage for Google, Apple, and Microsoft.
Google Drive (https://drive.google.com/)
- 15 GB for free
- 100 GB for $1.99 per month
- 1 TB for $9.99 per month
Apple iCloud (https://www.icloud.com/)
- 5 GB for free
- 20 GB for $0.99 per month
- 200 GB for $3.99 per month.
Microsoft OneDrive (https://onedrive.live.com/)
- 7 GB for free
- Additional 50 GB for $25 per year, about $2.08 per month
- Additional 100 GB for $50 per year, about $4.17 per month
OneDrive and Google Drive apps are available for all major platforms including Windows, Windows Phone, iOS, Mac OS X, Xbox, and Android. Apple's iCloud currently only supports iOS, Mac, and Windows, but also supports Apple TV.
Both Microsoft and Google both offer business versions of their Cloud storage services. Google Drive's business option comes as part of an overall Google Apps for Business subscription and provides 30GB on online storage. Microsoft, with Office 365, offers a 1TB of OneDrive space for business users.
Apple does not offer a special business option for iCloud.