Maesn is a Unified API purpose-built to simplify and accelerate integrations with ERP, accounting, and payroll systems across Europe. Tailored for SaaS vendors operating in finance-heavy domains, Maesn offers a standardized API layer that connects seamlessly to systems such as DATEV, Lexware, Sage, Xero, QuickBooks, Exact, Fortnox, and others. By abstracting the complexity of fragmented backend systems and regional compliance requirements, Maesn empowers development teams to launch robust integrations significantly faster while reducing long-term maintenance overhead. Instead of maintaining dozens of separate connectors for local systems, teams can build once on Maesn’s unified, normalized API. This reduces integration errors, streamlines QA, and allows product teams to deliver a more consistent and reliable experience to their customers—regardless of geography or system backend. What sets Maesn apart from generic integration platforms is its deep focus on European compliance and localization. The platform is hosted in Germany and fully GDPR-compliant, with built-in support for data residency, audit logging, and enterprise-grade access control. It’s engineered to meet the standards of even the most regulated markets, including support for SKR 03/04, GoBD audit requirements, and upcoming mandates such as KSeF in Poland. With over 500 live API endpoints, production-grade connectors, and support for new regional systems added regularly, Maesn evolves alongside your product roadmap. Key benefits include faster time-to-market, reduced engineering effort, simplified compliance, and a unified customer experience across markets. The platform also supports usage-based pricing that scales with API call volume and includes enterprise-ready options such as SLAs, dedicated hosting environments, and co-selling partnerships. In short, Maesn enables SaaS teams to stop managing complexity—and start scaling faster across Europe with one API layer that just works. One API. Fully localized. Enterprise-compliant. Built for SaaS teams ready to scale across Europe.