This past quarter, Bank of America (BAC) achieved more than 1 billion digital interactions with its customers. And while this may not be as popular a metric as net interest income or trading revenue, the company’s second-quarter earnings beat estimates on Tuesday. That earnings beat was driven by strength in its consumer bank, which has, in turn, been fueled by innovation in digital and mobile. The business saw loan growth across credit cards, autos and residential mortgages.