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Difference Between IaaS vs PaaS vs SaaS

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Head to Head Comparison between IaaS vs PaaS vs SaaS (Infographics)

Below are the top 9 differences between IaaS vs PaaS vs SaaS:

Key Differences between IaaS vs PaaS vs SaaS

Following are the key differences between IaaS vs PaaS vs SaaS:

Features of SaaS

No manual installation of hardware is required as everything is virtually available on the internet once we log in. It consists of software applications that your personalized logins can access.

No need for any technical specialist to update or upgrade the software applications. Cloud takes care of this.

The billed amount for the services taken for SaaS is based mainly on a fixed monthly fee. Thus it gives a clear estimation of Software and other subscriptions taken.

SaaS offers security and maintenance within the cost given to software applications.

PaaS (Known as a Platform as a service) provides hardware and software tools to develop applications over the Internet. Developers mostly use the PaaS cloud platform to design and develop software applications.

Features of PaaS

PaaS provides a Web-based User interface that multiple users can access.

It provides many features, like developing applications with testing, hosting, and maintenance.

It is quite flexible, scalable, and portable.

PaaS cloud computing platform is quite portable as when the user needs more storage capacity; he can opt for a public cloud.

PaaS is quite secure as it provides data security, backup, and recovery of lost data.

IaaS (Known as Infrastructure as a Service) uses the model of “pay per use” or “pay as you go” for storage, networking, and virtualization. IaaS services are delivered over the Internet, and users only pay for the services that are taken. In the IaaS model, users utilize the resources such as software, hardware, and storage space from third-party service providers, and they also host user applications with maintenance. Here the consumer or user saves time and money.

Features of IaaS

IaaS services are highly scalable and flexible.

Here hardware is configured by service providers, reducing high investments and time.

No waste of unused storage capacity; whenever more storage space is needed, it gets in time.

There is no single point of failure, as the IaaS service still runs if there is any fault in the network, server, or switch.

IaaS provides more security as its services are hosted externally.

IaaS vs PaaS vs SaaS Comparison Table

Let us look at the comparison table of IaaS vs PaaS vs SaaS.

SaaS PaaS

IaaS

Full-Form Known as Software as an asset Known as Platform as an asset Known as Infrastructure as an asset

Services Offered It offers a pre-package, which a user needs to install and use in their system. Offers work on the environment, including software and internet hardware. Offers Virtual machines and IP addresses to create a platform to test applications.

Usage Used among users of email and entertainment services. Used by mid-level developers to build their applications. Used by the skilled developer to develop unique applications.

Accessibility Accessible by multiple users. Accessible by multiple users. Accessible by multiple users.

Others Highly scalable to suit small, mid, and enterprise-level businesses. Highly scalable to suit different businesses according to resources. Highly flexible & Scalable

Layers Importance Final layer or pre-package layer. The center layer of the cloud computing model. Basic layer of cloud computing model.

Popularity SaaS has about a 27 % rise in the cloud computing model. PaaS has around 32% and is expected to be the most important model IaaS has around a 12% increment.

Examples Salesforce, DropBox Heroku, Azure AWS EC2, Rackspace

Key Terms Client-Server Application Solution Stack Utility Computing, Multitenant computing

Conclusion

The cloud computing concept arises from the network diagram mentioning the internet as a cloud. The services offered by either of the cloud computing models (i.e., Platform as a service, Software as a service, and Infrastructure as a service) are related to mobility, and it depends on the quality of service and security provided by the service providers for user experience.