I wasn't able to tell from the Office 365 business plan comparisons exactly which Office edition was included in each package. I was interested in using the PowerPivot add-in for Excel but noticed it said this:
Important: The PowerPivot add-in for Excel 2013 is only available with Office Professional Plus 2013. You must choose the Office 365 ProPlus or Office 365 Enterprise trial for download and installation in order to use the PowerPivot add-in for Excel 2013.
So does this mean that the Excel edition that comes with the Small Business Premium plan cannot run the PowerPivot addin?