The February 2013 Special Issue of Concurrency and Computation: Practice and Experience Journal covers some of the most relevant trends on scaling cloud infrastructures and platforms. Researchers and engineers are working on several approaches to improve the scalability of infrastructure clouds. Many of these lines try to evolve cloud systems so they are smart enough to make a better usage of the available underlying resources upon a variety of conditions. Dealing with the already impressive scale of the data and operations of the cloud requires well-thought mechanisms that are also capable of coping with the exponential increase in data generation expected in the coming years. Expósito and colleagues aim to run general-purpose computation on graphic processing units as a mechanism to expand current vessel capabilities. This is a revolutionary approach within the classic vertical scalability approach in conventional data centers. Quesnel and co-researchers propose an algorithm to handle deadlocks that may appear because of the partitioning policy.