Few IT trends have generated as much buzz as cloud computing. This talk will cut through the hype and clarify cloud computing. The bulk of the conversation will focus on the open source software that can be used to build compute clouds (infrastructure-as-a-service) and the complementary open source management tools that can be combined to automate the management of cloud computing environments. The discussion will appeal to anyone who has a good grasp of traditional data center infrastructure but is struggling with the benefits and migration path to a cloud computing environment. Systems administrators and IT generalists will leave the discussion with a general overview of the options for building and managing their own cloud computing environments using free and open source software.