CASI-F was conceptualised and developed as a complementary rather than an alternative framework to the wide-ranging and widely used set of methods and tools supporting sustainability assessment. SAMT conducted a systematic overview of existing sustainability assessment approaches and best practices across many sectors and industries, which helped to identify more than 100 methods and tools. In line with these findings, CASI-F was conceived as a set of protocols (interconnected methods) and tools (interconnected web-based applications) to support the assessment and management of SI. In other words, CASI-F is not meant to compete with or replace existing sustainability assessments but rather to support multi-level and multi-stakeholder decision-making related to sustainability-oriented innovations, policies and aspirations. However, there is little collaboration between research communities working with qualitative and quantitative approaches to sustainability assessment.