Enterprise Interoperability (EI) is a well established applied systems' research area, studying the problems related with the lack of systems and applications' interoperability in the organizations and proposing novel methods and frameworks to contribute with innovative solutions for EI problems. Collaborative networked environments emerged with the spread of the internet, contributing to overcome past communication barriers, and identifying interoperability as an essential property. With an increasingly complex and dynamic global market, models change frequently to answer new customer requirements, and seamless networked business environments is a requirement. Scientific foundations for EI are envisaged to roadmap such general knowledge covering the general laws of the operation on EI. This paper draws concepts from the complex systems science and proposes a formal model on seamless networked business for sustainable systems interoperability in dynamic networks.