The overarching focus of his research is service design. In particular, Bellos investigates the economic and environmental implications of the decisions that a provider or manufacturer makes during the design of pure service or product-service systems. Pure service systems are characterized by a unique feature: customers interact with the provider during the service delivery process in complex and uncertain ways to co-create the service outcome. At the same time, product-service systems are business models that enhance the traditional functionality of a product by incorporating additional services. Their novelty lies in the fact that customer value is linked primarily to the “use” rather than the “ownership” of the product. Oftentimes, product-service systems have been associated with environmental benefits. His research is analytical in nature and spans a variety of methodologies such as optimization, microeconomics, game theory, and stochastic processes.
His work on the "Design Challenges of Experiential Services" has received the 2012 Best Student Paper Award from the POMS College of Product Innovation and Technology Management, an Honorable Mention from the INFORMS Service Science Section (2011) and was also invited for presentation in the 2012 Services Special Interest Group of the MSOM society. Bellos was the finalist for the 2012 Georgia Tech Outstanding Graduate Instructor Award.
Bellos is a member of the Institute for Operations Research and the Management Sciences (INFORMS), the Manufacturing and Service Operations Management Society (MSOM), and the Production and Operations Management Society (POMS).