IT providers, software companies Stakeholders: - Software providers ad developers, hardware providers, network providers, quality assurance, project support, encryption key managers, IT-security auditors, data asset agencies Role: - Key stakeholders in digital services as developers to our services and as providers to the clients. Customers want services to be available through APIs, using the user interface of their choice instead of those provided by the tax agency. - TA's services are dependent on the quality of software providers' implementation. - Software providers can be good sources of information regarding the actual demands and practices of the clientele, which is useful when designing services. - Collaboration: co-creation of end-services in customer environment.