Micro-commerce is an emerging global trend, from the microcredit pioneered by Nobel Prize winner Muhammad Yunus, to micropayment systems offered by companies like ZayPay. ZayPay is used for payments for online services, game sites, dating sites, and others. And now they have an API.
Banking apps, and their ecosystems, offer banks a multitude of new revenues streams, as well as help to broaden partner and user bases. For those less convinced of app viability, a cursory glance at market trends should be convincing enough