The focus of engineering on achieving a superior product, processes and services from functional and economic factors is now shifting towards sustainable development. The aim is to provide customer business value and decrease environmental impacts. New easy to use tools are needed in the collaborative development of complex product-services. The EPES project carries out development to improve the sustainability performance of end-users products, operations and services. The Eco-Process Engineering System (EPES) provides a methodology and related ICT tools as a service for the development and management of product-services. This paper is an introduction to EPES system.