The Public Cloud is, in essence, an infinite resource of computing power and storage capabilities. For instance, with an Office 365 E3 subscription, you’re provided 1TB of Cloud storage per account and 1TB per organisation through SharePoint Online.
For a company starting with 20 knowledge workers with access requirements, that’s 21.01TB (you also get 500GB of SharePoint storage per user account) of Cloud-enabled, backup, redundant storage. To obtain that amount of storage in a traditional, on-premise setup the CAPEX cost would be close to $13,000 AUD. There’s also the added ongoing cost of backup and high availability software licensing as well as the human element to support and maintain and the utility costs to keep it running.
With the Public Cloud option, in the unlikely event that your 20 person company reaches your given storage limits, you’re able to, within seconds, add up to an additional 20TB of storage space.