In continuation of Create Promotion article, this article shows the specific details for Tiered Promotion Promotion

Tiered promotion is a way to improve the Average order value (AOV) by encouraging user to push the add to basket and showing the savings by increasing the quantity. So, for example a customer has basket value of £80, the user is then shown the message - add £20 worth items to get a 10% discount and once customer does that, then the customer is shown the message to get 20% discount if your basket is more than 200.

You can define upto 5 tiers and their respective % discount against the specific thresholds. Most important thing to keep in mind at the time of defining promotion is to define the incremental thresholds in the right order.