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POORNIMA UNIVERSITY
COURSE-MBASUBJECT-INFORMATION TECHNOLOGY
TOPIC-CLOUD COMPUTING
PRESENTED BY-SURBHI CHOUDHARYMONIKA RANIJUHI MADANANIL SHARMA
INTRODUCTION
Cloud computing means instead of all the computer hardware and software you are using sitting on your desktop or inside your company network, it provide service by another company and accessed over the internet. Cloud computing is a buzzword that means different things to different people. Cloud computing is a type of internet based computing that provides share computer processing resource and data to computer and other devices
WHAT IS CLOUD COMPUTING ?
Cloud computing is a combination of software and hardware based computing resource delivered as a network service.
BASIC CONCEPTS There are certain services and models
working behind the scene making the cloud computing feasible and accessible to end user. The models for cloud computing :
Deployment Models Service Models
DEPLOYMENT MODELSDeployment models represent the exact
category of cloud enviroment and are mainly distinguised by the proprietorship, size and access. It tells about the purpose and the nature of cloud. Cloud can have four types of access:
Public CloudPrivate CloudHybrid CloudCommunity Cloud
PUBLIC CLOUD The Public Cloud allows system and
services to be easily accessible to the general public. Public cloud may be less secure because of its openes
PRIVATE CLOUD The Private cloud allows systems and
services to be accessible within an organization. It offers increased security because of its private nature
COMMUNITY CLOUD The Community Cloud allows system
and services to be accessible by group organizations
HYBRID CLOUD The Hybrid Cloud is a mixture of
public and private cloud. However, the critical activities are performed using private cloud while the non-critical activities are performed using public cloud.
SERVICES MODELSServices Models are the refrence models
on which the cloud computing is based. These can be categorized into three basic services models are listed below:
1) Infrastructure as a service (Iaas)2) Platform as a service (Paas)3) Software as a service (Saas)
INFRASTRUCTURE AS A SERVICE (Iaas)Infrastructure is the delivery of technology as
an demand scalable services IaaS provides access to fundamental
resources such as physical machines, virtual machines, virtual storages etc.
Usually billed based on usageUsually multi tenant virtualized enviromentCan be coupled with managed services for os
and application support
IaaS Examples
PLATFORM AS A SERVICE (PaaS)PaaS provides the runtime enviroment for
applications, devlopment & deployment tools etc.
PaaS provides all of the facilities required to support the complete life cycle of building and delivering web applications and services entrily from the internet.
Typically applications must be devloped with a particular platform in mind
PaaS Examples
SOFTWARE AS A SERVICE (Saas)SaaS model allows to use software
application as a service to end users.
SaaS is a software delivery mehology that provides licensed multi-tenant access to software and its functions remotly as a web-based service.
SaaS Examples
ADVANTAGELow computer costsImproved performanceReduced software costInstant software updatesImproved document format compatibilityUnlimited storage capacityIncreased data reliabilityUniversal document access
DISADVANTAGERequires a constant internet connectionDoes not work well with low-speed
connectionsFeatures might be limitedStored data can be lost
THANK YOU...