Core banking diffusion in developing countries has been phenomenal in comparison to the many other technological devices implemented/introduced over the past 20 years. The success of this modality has spurred a lot of studies on consumers’ adoption and usage. The purpose of this research is to understand factors that influence core banking deployments in the financial sector, specifically in the context of a developing country. This study has adopted the Technology-Organization-Environment (TOE) framework and a qualitative approach to analyze core banking technology deployments in a financial company in Ghana. Respondents were interviewed to understand mobile banking deployments and thematic analysis was used for the purposes of making conclusions on the data. However, the study found that variables in the TOE framework like the relative advantage of a given technology, the less complex a technology, management support, firm size, competitive pressure and customer expectation were seen to influence core banking deployments. Another finding was that core banking functionality was not just about installing the services for consumers to use, but for the company to perform a trial run before deploying the services to customers. The findings will serve as a guide for financial companies in the deployment of similar technologies in the future.