Interesting that no one mentions that Google also runs the backend flight/hotel search used by most trip planning sites. They bought it (ITA) over a decade ago.

Interesting that no one mentions that Google also runs the backend flight/hotel search used by most trip planning sites. They bought it (ITA) over a decade ago. So all these providers already lost this power years ago and are just providing a fancy UX over Google's backend travel search service. Now Google is merging the two search engines and cutting out the middleman.