An integrated knowledge-based intelligent technology is being made available to help in the management and provision of health care services to chronically ill patients anytime and anywhere through the Web. The K4CARE project involved the joint effort of 4 technological institutions and 7 health care centres. This consortium combined experiences of old and new EU countries to define a new health care model for care of elderly people. New knowledge-based ICT technologies were researched, developed and integrated in a final product that implements the health care model as a web platform. This is a validated prototype that optimises the safe management of the care of chronically ill patients at home.