Abstract
This paper reports the initial result of a qualitative research on how to support customisation of SaaS (Software as a Service). The research follows the grounded theory method, and investigates the expectation of consultants who are specialized in customising enterprise software systems. The resulting theory contributes to the understanding of how customisation on SaaS differs from the traditional one, and provides a high-level guidance for SaaS vendors to prepare effective support for customisation
