It just means somebody paid for those keywords. When you buy your ad space at Microsoft, you can determine how it shows up at duck-duck-go, which keywords trig

It just means somebody paid for those keywords. When you buy your ad space at Microsoft, you can determine how it shows up at duck-duck-go, which keywords triggers your ad, what region you want it to work etcetera... (and yes, that is not a typo, you go to microsoft to buy ad space for ddg)