The cloud is a fantastic tool for small businesses as it has allowed them to access to enterprise-level applications for a fraction of what they used to cost in the old IT world - professional email being a great example - it's much more realistic to pay £100 per user per year for Office 365 Business which includes Exchange/Outlook email than the (potentially) thousands of pounds in upfront cost and maintenance for an on-premises Exchange server. However I do think that small businesses need to consider the following before placing their business data into consumer-level cloud offerings such as Outlook.com & OneDrive or Gmail & Google Drive: - these services do not offer a guarantee of uptime, ie. availability. - these services could theoretically (although unlikely, granted) just shut down - there are no contractual commitments to customers. - these services do not offer a guarantee of where in the world the data is stored and whether it is stored securely with the UK data protection act (DPA) and EU data privacy laws in mind. - in their standard configuration these services do not allow the business to "brand" their email addresses. In my businesses I use a mix of G-Suite and Office 365. Where I am storing personal data I use Office 365 because Microsoft guarantee that my data will be stored in the EU (Ireland). These concerns are not applicable to all businesses, but if you are storing data which must be protected under the DPA then please consider where you are placing that data in the cloud.