Virtualisation has transformed IT infrastructure by optimising use of commodity hardware within a software-defined environment. Now those principles are spreading to every area of IT - software-defined networks, software-defined storage, software-defined datacentres and more – we are moving to a world of software-defined everything. Pressure from IT decision-makers is driving IT away from any dependence on hardware capability to a more dynamic and responsive platform of software functionality. But, as with virtualisation, this is a move that will take time, while promising to deliver potentially significant benefits. In this CW500 video,Anthony Guethert, senior principal, Quintiles IMS, talks to Computer Weekly editor in chief Bryan Glick about plotting a roadmap to software-defined everything.