Access to information systems across corporate boundaries with high demands to privacy and trust result into ambitious research and development targets. This study provides motivation and a roadmap for approaching integrated security management solutions in a business network of partners with heterogeneous ICT and security infrastructures. We aim at describing specifics of identity and access management in inter-organizational collaboration, and a vision and arguments for identity and access management in a business network. A case study with Metso Paper, Inc., the leading manufacturer of paper machinery and related services, validates the results, thus providing a motivating example of the possibilities of e-services.