Google announced that they are rolling out in the Google My Business console a way for some US businesses that have appointments, reservations and the like the ability to integrate with a dozen or so booking platforms so searchers can reserve and book directly through Google Maps or Google Search.
In the next couple days, some US businesses will see in the Google My Business console a "Sign up for bookings" button, here is a screen shot:
When they click it, it will ask them which partners they work with, and you would select one and go through the steps:
Then after it is all integrated, it can take a few days, Google will begin tracking how well that is working out within Google Search. It tracks bookings, revenues and more:
Here is what the booking feature button looks like to searchers:
Forum discussion at Twitter.
