services, tax and transaction advisory, business development consulting, and help desk support for ongoing operational and regulatory questions. Rationum runs a modular startup support service that covers incorporations, bank account setup, restructuring of existing entities, and analysis of grants and funding options. Through its On-Board and ecosystem models, it also acts as an active shareholder and co-development partner for selected brands, especially in the hospitality and consumer sectors, focusing on governance, financial structure, and long-term value creation.