ADVAPAY O is a company specializing in providing comprehensive banking and payment technology solutions, including software and platforms tailored for electronic money institutions, payment service providers, and neobanks. Based on their website, ADVAPAY offers a range of services such as FinTech consulting, licensing assistance, and a core banking platform called "Forbis," which supports various financial services. The company aims to assist financial institutions in navigating regulatory requirements and leveraging innovative technology to enhance their service offerings.