Issuing payment cards and operating account programmes is one of the most regulated and operationally complex areas of European fintech. Contis was founded in 2008 with operations across multiple European jurisdictions and built one of the more comprehensive Banking-as-a-Service platforms in Europe, providing card issuing, account services, and payment processing to fintechs, financial institutions, and enterprise clients. Its product range covered the full stack of capabilities needed to launch a financial product — BIN sponsorship across Visa and Mastercard, account infrastructure, transaction processing, and the compliance frameworks that allow client programmes to operate within EU regulations. Contis was acquired by Solaris (formerly solarisBank) in 2021, becoming part of one of Europe's largest BaaS groups in a deal that consolidated significant card issuing and banking infrastructure capacity under a single corporate structure. The acquisition reflects the broader consolidation pattern in European Banking-as-a-Service — the operational scale and regulatory infrastructure required to compete in this segment increasingly favour groups that can amortise compliance costs across larger client bases. In the European BaaS landscape, the integration of Contis into Solaris created one of the more capable card and account infrastructure providers, serving clients across multiple European markets with combined operational depth that neither company would have brought independently.