This is the Sustainability 2.0 issue. This issue of LBx Journal is focused on sustainability and how location-based technologies are used to support sustainable businesses and business practices in the effective allocation of resources. In this issue, we look specifically at utility-scale solar facilities, aquaculture, insurance, and the open standards and software that enable the development of location-based systems. Why are location-based systems so important? Because when you can connect all the attributes associated with a place, you can answer not only the what, why, where, when, and how questions, but the should question.