Data sharing between primary and secondary care has long been a digital challenge.  With Matt Hancock – UK secretary of state for health and social care – focusing his attention on resolving these problems, interoperability is now firmly at the heart of his vision for the NHS.  Delivering integrated care across all care settings is a major UK focus with substantial funding and a new national programme underway.  In the article Digital Health Advisory Series on Interoperability – Jan 2019, Dedalus outlines its commitment to interoperability and its powerful offering and positioning in the market.