Microsoft Outlook with Exchange is the most common & secure medium for performing business communication. If we talk about the functions of both, Outlook is the main emailing client & Exchange acts as a server for all associated Outlook users. Both the platforms have different file formats to save the copy of user's data. Exchange Server keeps data in EDB format and Outlook supports PST format. PST which stands for Portable Storage Folder is the most used format for archiving years' data.
Why to backup Exchange Database?