Barracuda Cloud Archive, or Sonian, was a file archiving option developed by Sonian and acquired by Barracuda Networks in November 2017. It has been discontinued.
We started with the Message Archiver on-prem and filled up two of them. After we migrated to the cloud, we no longer had to worry about storage, and it was an easy transition. The Cloud Archive is a lot easier to manage with no worries.
We have had a couple of legal inquiries which required us to review emails for a user or users. Using the Barracuda Cloud Archiving Service, we have been able to perform searches quickly, narrowing or expanding the search criteria is easy, resulting in exactly what we were looking for. This has saved us with claims for collections, as well as a couple of legal HR matters. It is my trusted go to application.
It's not possible to integrate the Sonian archive with Outlook. The outlook add-in allows users to quickly retrieve items that have been archived, directly from their Outlook client.
Sonian does not currently offer email management systems such as Email continuity, spam protection etc., which you can get through other archiving suppliers as an all-in-one bundled solution with email archiving included.
We only need support when initially setting it up. We really have not had to call for user or help support on this product. It has always worked and is always easy to use.