Vaz, Daniel NetoSousa, BrunoSão Mamede, Henrique2022-12-222022-12-222022-02978-3-030-95946-3http://hdl.handle.net/10400.2/12810EMCIS 2021. Conferência Europeia, Mediterrânea e do Oriente Médio sobre Sistemas de InformaçãoThe multitude of e-government model raises questions as to their universal applicability. Indeed, literature posits that most data and research on e-government dominantly focuses on large economies where social, political, organizational, and economic aspects of these local contexts significantly differ from other parts of the world. Beyond, average developing economies, there is a group of countries specifically referred to as Small Islands Developing States (SIDS), as per the United Nation denomination, and these island states share common challenges of reduded size, diseconomies of scale, impact of climate changes and so on. Models guiding e-government implementation should be adapted to local context, and for SIDS this entails understanding their local context so as to formulate a model that is sustaible in the lng term. Even though we see studies for small economies, significant differences exists among SIDS that warrant individual approaches to each one of these island states. And an example of such a SIDS is the island state of Sao Tome and Principe, where recently the government is involved in technological initiatives, implementation of process simplification, harmonization and automation, and other e-government initiatives. This is visible at the Ministry of Finance where different interacting directorates have developed systems and software tools to management their business processes. These systems and tools are used for internal and external interaction with public and private sector, and were, however, developed in an environment lacking a centralized, interoperable vision or directives. Consequences are hight total cost of ownership, subsequent costs with interoperability and maintenance, and, in the end, deficient long-term sustainabiliyy Considering the impact of costs of information technology initiatives to the public budget, financed in its majority by development and bilateral assistance, it becomes a crucial need to set in place an e-government model to prescribe directives for a sound, interoperable and sustainable e- government implementation.enge-Governmente-GovernanceSmall island economiesSIDSGovernment ICTe-Government frameworkSao Tome and Principeconference object10.1007/978-3-030-95947-0_19