This IDC Market Analysis Perspective provides an overview of the four disruptive forces that are driving shifts in storage spending and capacity deployments. The forces are cloud, flash memory, software-defined storage, and convergence. The market is being impacted by the use of cloud services for both basic and advanced storage functions as well as the storage architectures used for hyperscale cloud service provider and Web 2.0 deployments. Driven by accelerated performance and reduced latency, all-flash and hybrid flash arrays continue to drive growth in the market while innovation also continues in the use of memory-based technologies at the compute layer. Software-defined storage coupled with shared and shared nothing storage architectures will continue to drive shifts in market segmentation. Last, the convergence of compute, networking, and storage infrastructure into larger IT building blocks promises greater IT agility, utilization, and operational savings.