Out of curiosity, does attribution also work if the ad is not clicked? For example, I bought a product the other day after seeing a Facebook ad, but I didn't c

Out of curiosity, does attribution also work if the ad is not clicked? For example, I bought a product the other day after seeing a Facebook ad, but I didn't click on the ad itself and rather went searching for it on DuckDuckGo, then after reading a bit about it online, bought the product. I'm curious as to whether that got attributed to the ad impression or not.