Slide 1: Rahul Raikar : Cloud Computing
What is Cloud computing? Cloud computing is getting extremely popular these days. Especially if you have a high traffic website / web based application and you don’t want to spend too much into hosting high end dedicated servers – cloud computing / cloud hosting is what you are looking for
Slide 2: Rahul Raikar : Cloud Computing
Cloud computing is a general term for anything that involves delivering hosted services over the internet. Basically a cloud is a virtualization of resources that manages and maintains itself. Broadly classified under the three categories:
1. IaaS: Infrastructure as a service. 2. PasS: Platform as a service. 3. SaaS:Software as a service.
Slide 3: Rahul Raikar : Cloud Computing
Infrastructure as a Service (IasS): A successful example of cloud computing providers would be Amazon Web services that provides virtual servers instances with unique IP address and blocks of storage on demand. An Amazon web service is extremely popular and apart from Amazon there are other reliable and efficient providers such as GoGrid and Rackspace. As the service involves users to pay as they need – its often highly beneficial and can be translated to other ulitity services used such as telephone, electricity and often this model is also called as utility computing. Benefits to the clients:
1. Stop worrying about heavy traffic and bandwidth requirements. 2. Pay as you go. 3. No need to buy high configuration servers from day one. 4. Low maintenance.
Slide 4: Rahul Raikar : Cloud Computing
Platform as a Service (PaaS): Platform-as-a-service in the cloud is defined as a set of software and product development tools hosted on the provider’s infrastructure. Developers create applications on the provider’s platform over the Internet. PaaS providers may use APIs, website portals or gateway software installed on the customer’s computer Force.com, (an outgrowth of Salesforce.com) and GoogleApps are examples of PaaS. Developers need to know that currently, there are not standards for interoperability or data portability in the cloud. Some providers will not allow software created by their customers to be moved off the provider’s platform.
Slide 5: Rahul Raikar : Cloud Computing
Software as a Service (SaaS): In the software-as-a-service cloud model, the vendor supplies the hardware infrastructure, the software product and interacts with the user through a front-end portal. SaaS is a very broad market. Services can be anything from Web-based email to inventory control and database processing. Because the service provider hosts both the application and the data, the end user is free to use the service from anywhere. There are several successful SaaS model running all over the web.
Slide 6: Rahul Raikar : Cloud Computing
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