Photonics – the science and technology of harnessing light - is everywhere around us now. Yet we are only at the beginning of what is possible. As one of the six pillar Key Enabling Technologies (KETs), photonics is essential to the functioning of the new applications which are powering Industry 4.0 and which are needed to address our major societal challenges. New advances in photonics will revolutionize so many industries and have far-reaching implications for business and society. Photonics technologies will be used to launch all sorts of new and better products in wide-ranging end-user industries from sustainable energy and environmental safety, to healthcare and wearables, to intelligent transport and communications systems, as well as being a key enabling technology for the transformation of production methods and new business models in European manufacturing.