For technical activities the society is divided into 5 divisions as given below :

The Computer Society of India (CSI) has decided to adopt the mechanism of Special Interest Groups (SIGs) in order to take up research, promotion, and dissemination activities for selected domains, both established and emerging. While CSI has had thematic areas in the form of Divisions since its inception, the prevailing view was that these were too heavy weight to be responsive to the rapidly changing developments in different domains within the field of Information Technology.

SIGs are intended to be lightweight structures that are constituted and dismantled on an as-needed basis, endowed with sufficient flexibility and functional autonomy to carry out its activities while being under accountable to the CSI Executive Committee. SIGs are organized on selected domains of significant academic, research, industry and societal importance.