The emergence of large scale distributed computing paradigms, such as Cloud Computing and Mobile Computing Systems, has opened up many opportunities for Collaborative Emerging Systems (CES). Collaboration services are at the core of any Emerging System, aiming to support collaboration among individuals, inter-teams and intra-teams. While most CES sytems have focused on using groupware systems (shared workspaces, video-conferencing, etc.) to support sharing and collaboration within one domain, the trend is to develop CES systems capable to support CES at large scale integrating. The objective of CES is thus to support efficient collaboration at large scale by addressing heterogeneity of resources, multi-domain nature, availability of resources, system reliability, etc.