Organizations are spending 20% to 30% of their IT budget on "Cloud Computing Platforms" like Amazon AWS, Microsoft Azure and Office 365.
But unlike other services where you purchase 'monthly subscriptions' to services which incur monthly costs, these Cloud Platform Vendors (CPVs) charge every subscription based on actual usage incurred on resource in that subscription; Disk space, Bandwidth, CPU, snapshots, backups, IP addresses ..... Everything is charged separately.
This has caught organizations off-guard where their costing systems are unable to process those thousands and millions of small line items each with its infinitesimal cost.