AppLovin is on an epic sprint, and it could have the legs to keep going.After toying for years with various digital advertising software stocks, I've finally landed on one I think is a winner: AppLovin (APP -0.89%). Nvidia may have (quite rightfully) captured the spotlight on Wall Street and catapulted itself into a spot among the largest companies in the world, but the GPU maker isn't the only business winning from the artificial intelligence (AI) race.Unlike some of the other businesses that like to flaun ...