Restaurant tech startup Olo just filed its IPO paperwork. Here's how founder Noah Glass grew his company to power delivery and ordering for 400 major brands like Wingstop, Sweetgreen, and Shake Shack. Summary List Placement Two years before the iPhone was released, Noah Glass saw the potential for diners to use the phone to streamline dinner orders and for restaurants to take control of their digital destiny. Fast forward more than a decade , Glass is ready to invite Wall Street to invest in that same dream. Glass' company, Olo, confidentially filed its IPO paperwork on Friday. Olo, founded in 2005, can best be described as a digital ordering and delivery enabling platform for restaurants. It's integral to over 400 different restaurant chains and how they get customers their food. But for those not in the restaurant biz, the name probably isn't familiar. The names of Olo's clients, though, certainly are: Wingstop, Shake Shack, Applebee's, Cheesecake Factory, Chili's, Five Guys Burgers Fries, and Sweetgreen, among others. By the company's own estimates, Olo is the platform of choice for 50% of all publicly traded restaurant brands. When these brands come out with a new tech-focused feature like curbside delivery or a partnership with Uber Eats, it's Olo running the engine behind the scenes.