Launching is often thought of as a huge event. Lots of noise, lots of PR. One big bang. For Ray, it's just a series of many small experiments.
Ray realized that the number one value prop for a consumer was coverage: when a user opened the app, the majority of merchants that were walking distance needed to show up. So, he set up an experiment. He targeted a handful of office buildings and a dozen merchants, all located on the same block. He didn't need to onboard all the merchants in Toronto, just all the merchants on this one block.
If you're about to launch a consumer product or a marketplace, check out what Ray has to say.