What's the Difference Between Cloud Computing and SaaS?

Simply speaking, cloud computing is a web-based services aimed at allowing users to obtain a wide range of functional capabilities on a ‘pay-as-you-go’ basis that previously required tremendous hardware and software investments and professional skills to acquire. Cloud computing is the realization of the earlier ideals of utility computing without the technical complexities or complicated deployment worries; whereas SaaS is deemed as a subset or segment of the cloud computing market.

To make it short, cloud computing is the infrastructural paradigm shift that acts as a platform for SaaS. Cloud computing serves developers and companies who develop software and services while SaaS serves end users who use software.