An obvious question many customers ask is whether you can use import and export (service or client) as a backup mechanism. The answer is yes, but there are few caveats. Please remember that both DACFx and the Import/Export Service are in CTP. Second, ensure you read the notes in the import/export post. Third, the export process is not transactionally consistent. So if you want to ensure your “backups” are transactionally consistent you will need to provide consistency separately.
The current recommended way to provide consistency is to create a copy of the database and export from the copy. Red Gate has released a tool that automates the copy/export process quite nicely. Check out their tool at their site and check out the walkthrough: