While some consider open insurance to be a buzzword with more hype than substance, the underlying trend of open finance stimulates insurers to use digital technology to exchange data with third parties to realise process efficiencies and develop new products and channels. Based on a literature review and 30 interviews with industry experts in Europe, we define open insurance, identify its key drivers, and discuss the dimensions and performance impact of open insurance strategy. The combined insights can help executives develop a better understanding of open insurance and formulate an open insurance strategy that provides performance benefits to them, customers, and third parties.