Many emerging services, such as tele-work, e-government, business solutions, are using Clouds for their advantage in various forms. Some businesses are providing services by outsourcing parts of their business processes, which are now hosted as Cloud-based software services. Others are adopting the Cloud based IT infrastructure to host the services. It is mostly the small and medium enterprises (SME) to benefit the economic incentives when using Cloud computing paradigm for their businesses. However, there are challenges associated with every new technology. Interoperability, communication, and security are the three major critical issues that need to be addressed when collaborative services are deployed in Clouds. Same is the case for the Cloud-based IT platforms that would manage large number of shared and disparate services. Various quality requirements, such as availability, security, economic cost, energy efficiency, and so forth determine the feasibility of collaborating across Cloud services and platforms. CollabCloud brings together researchers and practitioners from around the world to share their experiences on the challenges and problems faced in high collaboration applications in the Cloud. This event will define protocols and standards that needs to be set in place for improving collaborative technologies in clouds making clouds a new and acceptable paradigm for collaborative applications.