IBM is investing heavily in cloud computing solutions to meet internal and client needs. Cloud computing offers cost reduction, scale, utilization, and IT agility through various deployment and delivery models including Infrastructure as a Service (IaaS), Platform as a Service (PaaS), Software as a Service (SaaS), and Business Process as a Service. IBM's cloud services portfolio includes both public and private cloud options optimized for different workloads like analytics, collaboration, and development and testing.