Governments around the world have on their priority list creation of e-Government projects where they want to increase Government efficiency, improve Citizens services, reduce amount of papers, deliver 24x7 accessibility of Government and interconnect Government Agencies altogether for simplified data exchange. Czech Government Gateway (GG) is a specific Microsoft solution for successful implementation of such e-Government projects. The GG represents one of the building blocks in e-Government strategy for creation of central communication hub, registration and enrolment authority and technology for seamless integration with various back-end systems on Government Agencies' side.