John Gessau

Product Management Lead - Merchant Payment Solutions at ACI Worldwide

John has been in the payments industry for 18 years. He started with a technical focus, building and deploying payment systems across EMEA. He spent time leading a professional services team for S1 Corporation, and subsequently a solution design team. When S1 was acquired by ACI he lead the mobile banking team for a number of years, before transitioning to a focus on Merchant Payment solutions. John is responsible for the strategy of ACI’s Merchant Payment Solution. This includes a full omni-channel offering, giving merchants the ability to offer a consistent and seamless payment experience across all their consumer touchpoints, while managing the system through a single centralized business portal. Besides the core focus on merchant solution strategy, John plays a leading role in driving innovation inside ACI – having launched a world-class mobile payments solution and integrated new and valuable capabilities for merchants into the ACI offering.

Articles by John Gessau

Data and Analytics


Monetizing Payments Data: How Merchants Can Leverage the Power of Analytics

In the world of commerce, everything is driven by data. The information that merchants collect and analyze determines the marketing channels they use, what products they stock and which customers they focus on.


Merchant Considerations for Protecting Payments During the COVID-19 Crisis

As the spread of COVID-19 continues to impact businesses of all shapes and sizes in unprecedented ways, the power of payments has never been clearer. Drastic increases in online transaction volume and the need for essential in-store payment processing create new challenges for online and brick-and-mortar retailers alike. Here are a few ways that merchants can protect their business – from the perspective of payment processing and fraud mitigation – during this uncertain time.


Another Day, Another ‘Pay’? Why Google Pay Could Be Different

The official announcement of Apple Pay back in late 2014, and Android Pay just a few months later, was the catalyst for seemingly endless prognostication on the dawn of a new era in mobile payments. Along with a clutch of ‘Pay’ cohorts, these digital wallets were widely expected to transform shopper behavior, nudging us closer to cashless world where the physical wallet could be left to collect dust at home.

Prime Time for Real-Time

Global Payment Trends
As the world adopts real-time payments, how does your market stand to benefit?