With IaaS, organizations rent IT Infrastructure from cloud provider as pay-as-you-go basis. It involves renting servers, virtual machines, storage, networks, and operating system

PaaS provide an on demand environment, which makes it great for developing, testing, configuring and managing software based applications. It allows developers to create web and mobile applications in a short period of time. PaaS removes the stress of infrastructure development resources, involving servers, storage, network, and database.

SaaS provides organizations with access to software applications and database. Cloud providers manage the infrastructure and platforms that run software applications. Organizations uses applications in cloud and do not have to install and update application on physical devices. This process also eliminates the cost of acquiring, managing and upgrading the infrastructure which require continuous support and frequent security updates to make it secure.