Abandoned Cart Orders are the Orders which were added to the Cart by the customer but were not Purchased.
All such Order details are listed under the Abandoned Cart Orders Section.
Here's how you can manage your Abandoned Cart Order details
From the left panel in your dashboard select Online store -> Orders -> Abandoned carts
Click on the View option to view the Order details
The buyer will receive Abandoned Cart Order notifications over email if the buyer hasn't completed the purchase cycle within the first 30 minutes. The email will be sent within 35 to 40 minutes.
This helps in converting more prospective customers to buyers and turns out to be a beneficial trick as it helps in bringing in more revenue.