According to the Journal of Accountancy, there are steps companies can take to remain productive in the event the cloud goes down. 

When cloud software provider Wolters Kluwer shut down most of its systems, including its popular CCH Axcess tax software, on May 6, accounting firms were left unable to access client data or e-file tax returns just nine days before the May 15 tax return filing deadline for calendar-year not-for-profits as well as certain fiscal-year corporations, S corporations, and partnerships