GPConnect profiles and key national profiles should all be reviewed by the INTEROPen community, as it is essential for vendors who are implementing them on a national scale to influence the design and ensure there is consistency. However, because the Level 2 CareConnect profiles and CareConnect APIs have a basic set of constraints and operations to support UK interoperability, we hope that they can be taken and used by many local areas, vendors and innovative projects to develop new models of care in a way that doesn’t hold back innovation. We expect these projects will share their learning and specifications, and as they develop and scale, we envisage certain rules and patterns and other profiles emerging that may need to be plugged into a curation process so that other regions can pick them up with a degree of confidence that their design has been technically and clinically validated. Some regions may specifically come to INTEROPen for curation first, as they wish to gain further guidance. We will need to support both approaches.