SaaS, PaaS, IaaS: Definition, Difference, Compare Cloud Service


Cloud Service, SaaS, PaaS, IaaSWe all know that cloud computing is going to have a long time as a hot service in the business. Many organization is moving to the cloud for application, service or infrastructure deployment. But cloud computing and service is a very broad concept to understand. It is important to understand the difference between these cloud services. Many companies use these services to accelerate their product development, offload work etc. This article is going to cover these three ‘as a service’ with their definition, difference and comparison.

SaaS- Software as a Service:

Software as a Service (SaaS) is one big part of the cloud service world. It spread so fast across businesses and it is still growing. SaaS is actually an application service that needs web-browser to run itself. No installation or setup or space in the system required. Still, some SaaS require plug-in support and installation to do some extra task. Third-party here manage the services, management and its deployment. For example, you can look at CRM app like Salesforce, cloud suites like Google Apps, DropBox and other. One of the good reasons to use this services is that it is cost-effective. SaaS service comes on the subscription basis. So you only pay till you need them. You don’t have to make a one-time big purchase.

PaaS- Platform as a Service:

Platform as a Service (PaaS) may be less used than the SaaS but it has proved its worth in time. If you are into development PaaS provide you a platform to do make the custom application. The server, maintenance and updates are still controlled by the third party application. This allows developers to focus on the software development. About the installation, OS, storage and infrastructure these will be controlled by the enterprise or third party. Application developed on the PaaS have components inherited from cloud service. So these developed software are high availability, tenancy and scalability. PaaS has several benefits that we can count on. Reduced amount of code to be done, migration of app and implementation of business policy are few of them.

IaaS- Infrastructure as a Service:

Infrastructure as a Service is same as purchasing or billing the utilities. With IaaS we can control the database center; compute, networking, storage on the consumption basis. It provides complete access to the networking, storage and other things to an enterprise. API or a dashboard is a way here to control all these service. By this way, an enterprise can control the services remotely, without even making a physical appearance at the datacenter. Thing that makes it opposite to SaaS and PaaS is its managing aspect. Here, for example, we can take Microsoft Azure, AWS (Amazon Web Service). With IaaS business will work on VM ware on someone else server instead of your own. This way your application will be available to anywhere your provider has a datacenter.