Nine years after Apple opened the Apple App Store to third-party developers, digital business leaders are still asking, “Does our firm need an app?” Many do, but the reasons have changed. There are more reasons than a simple ROI to build an app. Apps may serve your best customers, even if few in number, or those you aspire to attract. An app focus could also drive needed infrastructure modernization. Before deciding to build, update, or kill a mobile app, digital business professionals should consider a host of strategic and tactical factors, outlined here.