Green Information Technology (IT) has emerged as a crucial topic for environmentally and sustainability development. At the same time, Green IT impacts the organisation as well. Studies show there is a lack of a proposed framework in the Green IT literature. As the IT industry is one of the significant sectors supporting the Green Technology Policy, this study objective is to identify the factors rendered in the Green IT adoption and examine the factors that drive the adoption of Green IT in Malaysia. The study referred to the case study to show the most important factors rendered in Green IT adoption in the public sector and the private sector in Malaysia. A qualitative method was applied through a semi-structured interview by using open-ended questions as a guideline with five organisations from the public sector and the private sector. This study prioritises the explanation building as a specific approach to analysis. Results show that there are five factors rendered in Green IT adoption in Malaysia: environmental factor, cost factor, organisational factor, technological factor, and business opportunity factor. This study benefits policymaker, organisations, and other researchers to support Malaysia’s pledge to reduce its Greenhouse Gas (GHG) emission intensity of Gross Domestic Product (GDP) by up to 45% by 2030.