WDS was a direct sync option to connect Outlook to Informant via a desktop client. It was discontinued In 2011. It became a very unreliable sync service and consequently was retired.
In its place a new method is being offered. This method syncs via the internet with our own Informant Sync service.
You will need to purchase and install the Outlook add in called Informant Sync For Outlook (ISFO).
This will connect Outlook to the Informant Sync service and will allow two way syncing between Informant and Outlook
This solution is only for Outlook installed on a PC