The aim of this paper is to identify the role of conceptual frameworks in operationalising and mainstreaming the idea of ecosystem services. It builds on some initial discussions from IPBES, which suggested that conceptual frameworks could be used to: ‘simplify thinking’, ‘structure work’, ‘clarify issues’, and ‘provide a common reference point’. The analysis uses the cascade model as a focus and looks at the way it has been used in recent published material and across a set of case studies from the EU-funded OpenNESS Project as a device for conceptual framing.