A Plethora of Challenges and Opportunities

This is an exciting time for cloud computing, as not only is the field expanding very fast, but also many organizations, communities, and people are involved. This issue of IEEE Cloud Computing includes a full roster of columns and departments, several of which touch on the use of open source software for cloud computing, a topic of a future special issue. The issue also features a roundtable of experts from academia discussing current cloud challenges, how the industry is addressing these challenges, and how cloud technologies are evolving. Other topics include interoperability in the cloud and cloud sensor data.