Because InterSystems Health Connect sits on top of InterSystems IRIS, it has access to the full suite of interoperability tools and the full performance of IRIS, which has been honed to scale horizontally and vertically. Integration, especially with health care data, is easy with Health Connect and its built in dictionaries, schemas, and tooling.
InterSystems is actively upgrading the user experience as well, replacing a dated Zen front end with a modern Angular UI. This will allow them to continue to refine their user interface in a modern technology with many additional tools available to them.
If you're an InterSystems customer, their best in class WRC will respond to any issue you have and provide support that, frankly, goes way beyond any other services I've used. Review collected by and hosted on G2.com.
Health Connect doesn't allow you to program in ObjectScript and build classes, which I view as a key part of scalable interoperability. Review collected by and hosted on G2.com.