Wireless and ubiquitous connectivity have enabled mobile computing and Internet access on the go as a life-enhancing and indispensable experience of modern life. More than 50 billion devices, in more than 200 device types, will likely be connected to the Internet by 2020 as integral components of a new generation of high-value application services for consumers and enterprises. API-defined mobile services have become essential ubiquitous services consumption and delivery enablers for many industries and government organizations worldwide. The 2014 IEEE International Conference on Mobile Services (MS) aims at providing an international forum that is dedicated to exploring different aspects of mobile services (from business management to computing systems, algorithms, and applications) and to promoting technological innovations in research and development of mobile services, including, but not limited to, wireless & sensor networks, mobile & wearable computing, mobile enterprise & eCommerce, ubiquitous collaborative & social services, machine-to-machine & Internet-of-things clouds, cyber-physical integration, and big data analytics for mobility-enabled services. Sponsored by IEEE Computer Society's Technical Committee on Services Computing (TC-SVC), 2014 IEEE World Congress on Services (SERVICES 2014) aims to serve as a federation to host the following five theme topic conferences to explore the deep knowledge space of Services Computing in different directions: