Arcum | 2,140 followers on LinkedIn. Increase Merchant Revenue and Retention with Arcum AI | Arcum is an AI firm focused on helping payments companies reduce merchant churn and improve their overall revenue results. By leveraging the power of data and combining it with our more than forty years of analytics experience, we can bring our clients a more in-depth view of their retention and pricing strategies. Whether you are looking to identify clients at risk of leaving using machine learning, or create data-driven pricing strategies, Arcum has the necessary tools to assist you through these complex questions.