E-commerce has captured the attention of the business world as both a great opportunity and as a source of competitive threat. This study aims to identify the factors that support or impede the use of e-commerce among Saudi organisations. This study draws upon Diffusion of Innovation (DOI) theory to develop and test a model of e-commerce adoption in organisations. We specify three innovation characteristics (relative advantage, compatibility, quality of service provider and security risks) as determinants of the adoption of ecommerce. Results reveal that relative advantage, compatibility, quality of service provider and security risks influence e-commerce adoption. The study results are both theoretically and empirically valuable in which organisations may find the study results useful for the creation of policies that can foster e-business adoption.

Keywords : Innovation Adoption; E-Commerce; Technology Diffusion; Developing Arab Nations; Saudi Arabia; Diffusion Of Innovation (DOI) Theory.