High Quality Content by WIKIPEDIA articles! Eucalyptus is an open-source software infrastructure for the implementation of cloud computing on computer clusters which provides an interface that is compatible with the Amazon EC2 service. Its development is sponsored by Eucalyptus Systems, a venture-backed start-up [2].Eucalyptus began as a research project in the field of high performance computing (HPC) under the direction of Professor Rich Wolski in the Computer Science Department at the University of California, Santa Barbara.