Bing Ads announced they have now opened up their Dynamic Search Ads, DSAs, to all US and UK based advertisers. DSAs use Bing's "organic search crawling and machine learning algorithms to automatically match the most relevant page on your website to a given search query." Google does something similar but would not dare mention "organic search" when talking about ads.
They use this to "dynamically generate an ad to match the implied search intent, location intent, or any additional real-time signals that are available and show the ad on Bing."
Here is a screen shot:
Here is a help document from Bing Ads on their DSA platform.
Forum discussion at Twitter.