What is Position-based Model (on attribution)?
The Position Based model allows you to create a hybrid of the Last Interaction and First Interaction models. Instead of giving all the credit to either the first or last interaction, you can split the credit between them. One common scenario is to assign 40% credit each to the first interaction and last interaction and assign 20% credit to the interactions in the middle.
When the Position-based model is useful?
If you most value touchpoints that introduced customers to your brand and final touchpoints that resulted in sales, use the Position Based model.