Cloud computing is an emerging technology aimed at providing various computing and storage services over the Internet. However, Multimedia processing in a cloud imposes great challenges. In the May issue of IEEE Signal Processing Magazine, an article, entitled “Multimedia Could Computing”, introduces the principal concepts of multimedia cloud computing and presents a novel framework. In particular, the authors address multimedia cloud computing from multimedia-aware cloud (media cloud) and cloud-aware multimedia (cloud media) perspectives. Multimedia-aware cloud addresses how a cloud can perform distributed multimedia processing and storage and provide quality of service (QoS) provisioning for multimedia services. Cloud-aware multimedia addresses how multimedia services and applications, such as storage and sharing, authoring and mashup, adaptation and delivery, and rendering and retrieval, can optimally utilize cloud-computing resources to achieve better quality of experience (QoE). The interested readers can access the article at here.