Welcome to the official website of the Third International Conference on Enterprise Systems. ES 2015 will take place in Basel, Switzerland from Wednesday 14 to Thursday 15 October. The conference focuses on both the technical and application aspects of enterprise systems technology, and the complex and cross-disciplinary problems of enterprise integration. The conference is hosted by the FHNW University of Applied Sciences and Arts Northwestern Switzerland and co-hosted by the IEEE Sections Switzerland and South Africa. The Enterprise Systems conference series is jointly supported by the IEEE Technical Committees Enterprise Architecture and Engineering and Enterprise Information Systems. Previous Enterprise Systems conferences were held in Cape Town, South Africa (ES 2013), and in Shanghai, China (ES 2014).