This group is dedicated to people working with data and information systems to strengthen immunization programs. It is intended use is manifold: to serve as a forum for immunization information system (IIS) stakeholders to discuss topics of interest, ask questions, and receive feedback; to allow users to share and access IIS resources in conjunction to the TechNet-21 Resource Library; to help users get information about IIS events and jobs; and finally, to connect IIS stakeholders and experts around the world in sharing knowledge and building a community of practice. The group is currently managed by Jan Grevendonk and David Oh of WHO-HQ. If you have any questions or suggestions about the administration of this group, please do not hesitate to contact either of them through TechNet-21 private messaging.