This research paper presents a multi-case study investigation of organisational approaches and experiences in IT innovation. It aims to extend the existing understanding of IT innovation by incorporating broader elements of contemporary innovation theory informed by an empirical investigation of real world IT innovation practice. The research methodology involved nine organisational cases being purposefully selected because of their involvement in the development, implementation and/or use of IT as part of self-reported IT innovation. Across the nine cases, four cases were selected from the IT producing sector and five from the IT user sector. The key findings associated with this investigation are presented in the form of a dynamic model of IT innovation, grounded in data relating to nine organisational case studies of IT innovation. This model emphasises the importance of mechanisms that combine domain knowledge with new and existing IT assets and capabilities to create platforms for continuous innovation.