Journal of E-Technology Sasithorn Suchaiya, Somnuk Keretho 5 4 2014 Many countries have actively engaged in the development of interoperability for electronic data and transaction exchange among government agencies to provide better joint-up public services to their citizens. National level policy frameworks, often called Electronic Government Interoperability Frameworks (e-GIF), have been established to drive these initiatives in many of those countries. However, most of these e-GIF frameworks haven't adopted the holistic concept of Enterprise Architectures (EA), except for example in the case of Thailand, U.S.A. and Canada. This paper proposes a comparative analysis methodology with an aim to propose further improvement for the EA-based interoperability frameworks to better drive the effective development of smart and connected e-government services. In this paper, Thailand e-Government Interoperability Framework is methodically compared and analyzed with the U.S. Federal Enterprise Architecture Framework as a case study.