In this guide, you will get the answer to the question: "How can campaign that is switched off bring a purchase?"
For campaign that is switched off is still possible to bring a purchase but only in Last click attribution window.
Last click attribution
The last click attribution model is based on the last channel the customer clicked before making a purchase, this model is not time-limited.
For example, somebody clicked on Facebook Ad six weeks ago, and today came directly to your website, the credit will go to the Facebook Ad that brought the customer 6 weeks ago.
On the other hand, if the customer clicked on a Google Ad in-between the Facebook Ad and the final purchase, the credit will go to the Google Ad as it was the last advertising medium before the purchase.
This model is extremely valuable if you use multiple advertising mediums.
While using this attribution window it is possible to see incoming purchases even after the campaign had been switched off.