One can compare the basic patterns of three cloud computing services, software as a service (SaaS), platform as a service (PaaS), and infrastructure as a service (IaaS). Each model has its own advantages, and people need to understand why cloud computing vendors offer these different models and their impact on the market. SaaS, PaaS, and IaaS are different, and most software-centric companies use one of these three. Let's take a look at these key categories and introduce some of the most common SaaS, PaaS, and IaaS providers on the market today.
SaaS: Software as a Service
Software as a service, also known as cloud computing application service, represents the most common choice for enterprises in the cloud market. SaaS uses the Internet to provide its users with applications managed by third-party vendors. Most SaaS applications run directly through a web browser and do not require any downloads or installations on the client.
Notable vendors: Salesforce, ServiceNow, Google Apps, Dropbox, and Slack (and of course ParkmyCloud).
PaaS: Platform as a Service
Cloud computing platform services or platform as a service (PaaS) provide cloud computing components for certain software and are primarily used for applications. PaaS provides developers with a framework they can build and use to create custom applications. All servers, storage, and networks can be managed by a business or third-party provider, and developers can maintain application management.
Notable providers and products: AWS Elastic Beanstalk, RedHat Openshift, IBM Bluemix, Windows Azure, and VMware Pivotal CF.
IaaS: Infrastructure as a Service
Cloud computing infrastructure services are called Infrastructure as a Service (IaaS) and consist of highly scalable and automated computing resources. IaaS is used to access and monitor computing, storage, networking, and other infrastructure-related services, and allows organizations to purchase resources on demand without having to purchase hardware directly.
Notable providers: Amazon Web Services (AWS), Microsoft Azure (Azure), Google Cloud Platform (GCP), IBM Cloud.