The growing technological development, the accelerated devices convergence process and the increasing possibilities for interaction and communication, which are characteristics of 21st century, are introducing changes in all society's instances. In such mediated, networked context, an area that presents considerable development degrees in recent years and uncountable social-cultural, technological challenges is the institutionalization of information processes and/or services in government portals. From this perspective, the present work proposes CAfe-G (Common Architecture for e-Government), a comprehensive web-based framework meant to support interoperability among e-government systems, in order to improve the interaction levels of services provided by governments for their citizens (G2C), to support interaction among different governments (G2G), to assist citizens' requests for government services (C2G), and to enhance the relationship among citizens (C2C). Adaptation concerns are also addressed to support effective CzRM (Citizen Relationship Management). The proposed architecture consists in a bus of services and facilities designed to provide a high level of interoperability through a semantic-driven, upper ontologies-based mechanism for publishing and retrieving of such services and facilities. This approach is aimed to provide virtual spaces and communities for major participation of citizens, thus supplying services integration in order to boost the information exchange among different systems. CAfe-G is CORBA-inspired and it was built over concepts brought from AOP (Aspect-Oriented Programming) and FOP (Feature-Oriented Programming). CAfe-G presents a feature set to represent Services related to Semantic, Life Events-Driven Presentation or pertinent to Facilities like Mobile, iDTV (Interactive Digital Television) and Trading Services. CAfe-G would help to reduce the bureaucracy, increase the transparency in governmental actions, intensify citizens' digital inclusion, and speed the use of technology up in governmental agencies, through the information interoperability among countries, governments and citizens.