Office Download Store Add-ins – These are purchased and available through the Microsoft Office Add-ins store.COM Add-ins – requires full software installation process for the functionality to be available.They can be opened for single use, or installed to ensure the features and functionality are always available. Excel Add-ins – typically these are Excel files saved with.Whilst they can be created by third-party suppliers, even Microsoft themselves develop add-ins to provide additional functionality. Excel Add-ins are mini-software applications which provide Excel with enhanced functionality and automation features.
