A method and system for generating a set of service definitions relating to a computer application based on a set of interaction models relating to a set of participants in the interaction models. For each participant, a set of message traces is extracted from the set of interaction models and common message events in each message trace are identified. The common message events are transformed into service actions and a service definition is generated including the service actions. The generated service definition may then be deployed on a suitable computing system, such as, for example, a Service Oriented Architecture (SOA) platform.