Digital ecosystems capture the essence of the classical, complex ecological environment in nature, where organisms form a dynamic and interrelated complex ecosystem. They converse and utilise its resources. This analogy is a new mind-set and way of thinking in the Digital Economy. Digital ecosystems transcend the traditional, rigorously defined collaborative environments, such as centralised (client-server) or distributed models (peer-to-peer) or hybrid model (such as web services) into a self-organised, interactive environment which offers cost-effective digital services and value-creating activities that attract human, organisational and software agents that participate in and benefit from it.