Start talking to potential customers as soon as possible. Do what DoorDash did and talk to 200 small business owners. Next is one of my favorite ways to launch through online communities. When a company goes through YC, for example, they have the option of launching on Bookface before they launch publicly.
YC's Kat Mañalac wants to change the way you think about launching. In her talk, she shares the multitude of ways to launch and get attention for your product, with tangible strategies and examples from companies like Airbnb.
Apply to Y Combinator: https://www.ycombinator.com/apply/