Iaas Vs Paas Vs Saas

Iaas Vs Paas Vs Saas

IaaS (Infrastructure as a Service):

Infrastructure as a service (IaaS) is an instant computing infrastructure, provisioned and managed over the internet. You get the InfraStructure & Pay accordingly. You have freedom to install any OS or Applications as required.

Example : Amazon Web Services (AWS), Google Cloud Platform (GCP), Oracle Cloud Infrastructure (OCI). Below are the few variations on Iaas,

• Compute Cloud Services (Virtual Machines, EC2)
• Network Cloud Services (DNS,Load Balancing)
• Storage Cloud Services (File Storage)

PaaS (Platform as a Service):

PaaS or platform as a service model provides you computing platforms which typically includes an operating system, programming language execution environment, database, web server. Technically It is a layer on top of IaaS as the second thing you demand after Infrastructure.

PaaS delivers the infrastructure and middleware components that enable developers, IT administrators and end users to build, integrate, migrate, deploy, secure, and manage mobile and web applications.

Example : Google App Engine, SOA Cloud Service, Oracle Integration Cloud Service

SaaS (Software as a Service):

In a SaaS, you are provided access to application services installed at a server. You don’t have to worry about installation, maintenance or coding of that software. You can access and operate the software with just your browser. You don’t have to download or install any kind of setup or OS, the software is just available for you to access and operate. The software maintenance or setup or help will be provided by SaaS provider company and you will only have to pay for your usage.

Example: Oracle HCM Cloud, Oracle ERP, Microsoft office365, Salesforce.