Cloud Computing: Services Models and Deployment Models

Introduction

“At its most basic, cloud computing is moving applications accessible from our internal network onto an internet (cloud)-accessible space. We're essentially renting virtual machines in someone else's data center, with the capabilities for immediate scale-out, failover, and data synchronization. In the past, having an Internet-accessible application meant we were building a website with a hosted database. Cloud computing changes that paradigm—our application could be a website, or it could be a client installed on a local PC accessing a common data store from anywhere in the world. The data store could be internal to our network or itself hosted in the cloud.” (Duchene, 2010)

“There are three ways in which cloud computing can be utilized for an application. In option 1, both data and application have been hosted in the cloud, the second option is to host our application in the cloud and our data locally, and the third option is to host our data in the cloud and our application locally.” (Duchene, 2010)

Clouding computing is very popular services which people talk and look forward to use now a day with a lot of research are ongoing for the cloud is worthy to be invested in. Very popular service like Gmail, Google drive, Facebook, Dropbox, etc… which people now a day used are obvious cloud technology. Moreover, most of the enterprise, SME and governments are looking forward to implement cloud base solutions to settle technology challenges, reducing costs, targeting new levels of efficiency and trying to create innovative business models.

The objective of this research report is to provide a brief background on different theoretical facts of cloud and the practical usefulness of the design, installation and implementation of cloud computing. In order to see how cloud will become the most important part when business is set up without very high initial setup cost and only pay as you grow services.

Services Models of Cloud Computing

Software as a Service (SaaS) : consumer can choose a service only application that require for business. It can be accessible by different devices like a web browser, mobile or a program interface. Infrastructure such as network, operation systems, servers, storage, business applications and services like email or a CRM will be manages by SaaS provider. Only limited user-specific application configuration settings can be customized. The benefit of SaaS is no initial set up expenses such as servers or software licensing.

One example of SaaS is Microsoft Office 365 which provides services like SharePoint Online, Lync Online, Exchange Online and Office Professional Plus.