AutoSave in Excel for Office 365 saves the file to the online location every few seconds as you work. AutoSave in Excel for Office 365 is automatically enabled when you save a workbook using the newest file formats to an online destination, like OneDrive or SharePoint. This tutorial shows you how to use AutoSave in Excel for Office 365.
AutoSave in Excel for Office 365: Overview AutoSave in Excel for Office 365: How to Enable AutoSave in Excel for Office 365