[SalesForce] Abandoned cart Journey using data from Track Code

Update - spring 2018:

It is now possible to enable the integration of this tracking data into PI_ and IGO_ data extensions, without involving Salesforce Services. You can enable it yourself, once you find the settings here:

Personalization Builder > Predictive Email > Status > Settings icon > Data Extension Settings

--- end of update----

I know this is a late reply, but hopefully it might help others in same situation. You need to contact Salesforce to enable integration between web tracking app (formerly known as IGO Digital) and Marketing Cloud. This is a standard service provided through your SFMC Account Executive. Once this is in place, you will be able to see the data in a number of Data Extensions (starting with IGO_) in your Marketing Cloud instance.

Brgds Lukas

This might be "too little, too late", but this can now be done within the SFMC platform, with a new released (July 2020 Release) feature, called Behavior Triggers. In those, you can configure the session timeout that "should" determine the site's ability to identify the cart as abandoned.

Behavior Triggers

Set Behavioral Trigger Session Timeout Limit

In doing so, you'll be able to toggle the amount of time for a session timeout. Currently, this can be set in 15 minute increments, from 15 min through 3 hours. The session timeout configuration applies to all triggers that are created, which currently three (AB Cart, AB Browse, and AB Wishlist).