In your own words explain the difference between two types of cloud computing: Platform as a...

In your own words explain the difference between two types of cloud computing: Platform as a service (PaaS) and .Infrastructure as a service (IaaS). Give at least 2 examples of PaaS and 1 example of IaaS AWS solutions implemented by Zillow. Describe main features and benefits of each .

Expert Solution

Platform as a service (PaaS)

Cloud platform services is additionally referred to as Platform as a Service (PaaS) which offer cloud components to certain software while being employed mainly for applications. PaaS delivers a framework for developers that they'll build on and use to form customized applications. All servers, storage, and networking is managed by the enterprise or a third-party provider while the developers can maintain management of the applications.

Fetures of PaaS:

It is simple, cost-effective development and deployment of apps.
PaaS is scalable.
PaaS is highly available.
In PaaS developers can customize apps without the headache of maintaining the software
It give significant reduction in the amount of coding needed.
Automation of business policy.
Easy migration to the hybrid model.

Examples of PaaS ::: AWS Elastic Beanstalk, Windows Azure, Heroku, Force.com, Google App Engine, and OpenShift.

Infrastructure as a service (IaaS)

Cloud infrastructure services is additionally referred to as Infrastructure as a Service are made of highly scalable and automated compute resources and is fully self-service for accessing and monitoring computers, networking, storage, and other services. Infrastructure as a Service allows businesses to purchase resources on-demand and as-needed instead of having to buy hardware outright.

Features of IaaS:

In SaaS resources are available as a service.
Here cost varies depending on the consumption.
In SaaS services are highly scalable.
Here multiple users can work on a single piece of hardware.
Organization retain complete control of the infrastructure.
SaaS is dynamic and flexible.

Examples of IaaS ::: DigitalOcean, Linode, Rackspace, Amazon Web Services (AWS), Cisco Metacloud, Microsoft Azure, and Google Compute Engine (GCE).

A good example of IaaS is AWS EC2.

EC2 provides scalable infrastructure for companies who want to host cloud-based applications.

EC2 users do not own the physical server, AWS provides virtual servers.

IaaS	PaaS
♣A service model in cloud computing that provides virtualised computing resources over the internet.	♣A cloud computing model that deliver tools necessary for application development over the internet.
♣IaaS is used by System Administrator.	♣PaaS is used by Developer.
♣User get virtual data center to store information and create platform for services and app development, testing and deployment.	♣User get virtual platform and tools to create, test,deploy apps and services.
♣Servers, storage, networking and vertualisation is under the control of Provider.	♣Servers, storage, networking and vertualisation as well as operating system, middlewareand runtime is also under the control of the provider
♣Operating system, middleware,runtime and data is under the control of the User.	♣Application and data is only in under control of the User.

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