cloud computing presentation

Enter the cloud

• Cloud computing is Internet-based computing

• Users do not need knowledge, control, ownership in the computer infrastructure

• Users simply rent or access the software, paying only for what they use

HISTORY

• J.C.R. Licklider vision was for everyone on the globe to be interconnected.

• Other experts attribute the cloud concept to computer scientist John McCarthy who proposed the idea of computation being delivered as a public utility.

HOW CLOUD COMPUTING WORKS

Different Computing Models“Why do it yourself if you can pay someone to do it for you?”

SaaSSoftware as a Service

Software delivery model

• Increasingly popular with SMEs

• No hardware or software to manage

• Service delivered through a browser

Advantages

• Pay per use• Instant Scalability• Security• Reliability• APIs

SaaS

Examples• CRM• Financial Planning• Human Resources• Word processing

Commercial Services:• Salesforce.com• emailcloud

SaaS

PaaSPlatform as a Service

Platform delivery model

• Platforms are built upon Infrastructure, which is expensive

• Give me nice API

• Take care of the implementation

Advantages


PaaS

Examples

• Google App Engine• Amazon S3

Popular services

• Storage• Database• Scalability

PaaS

IaaSInfrastructure as a Service

Computer infrastructure delivery model

Access to infrastructure stack:– Full OS access– Firewalls– Routers– Load balancing

Advantages


Examples

• Flexiscale• AWS: EC2

IaaS

Cloud Deployment Models

•Public Cloud

•Private Cloud

•Hybrid Cloud

Opportunities

• The use of the cloud provides a number of opportunities:

– It enables services to be used without any understanding of their infrastructure.

– Cloud computing works using economies of scale:

– Data and services are stored remotely but accessible from “anywhere”.

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Challenges

• In parallel there has been backlash against cloud computing:

– Use of cloud computing means dependence on others and that could possibly limit flexibility and innovation:

– Security could prove to be a big issue:

– There are also issues relating to policy and access:

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Advantages of Cloud Computing

• Lower computer costs• Improved performance• Reduced software costs • Instant software updates• Unlimited storage capacity• Increased data reliability

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Disadvantages of Cloud Computing

• Requires a constant Internet connection• Does not work well with low-speed

connections• Features might be limited• Stored data might not be secure• Stored data can be lost

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Cloud Computing Vendors and Wide Spectrum of Usage

• Bit Torrent• Skype• LinkedIn• YouTube• Google• Microsoft• Forums• FaceBook• Yahoo

• Dell • EMC• Fortress ITX • Google• HP • IBM • Oracle• Salesforce• SAP• VMWare• XCalibre

The following vendors are just a few companies offering and using private or public cloud platforms and services:

Best cloud computing companies

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Conclusion• Cloud computing is a really

cheap way for companies to have all the resources they need in once place.

• It’s a much better way to spread your resources, and it becomes easier to access things from longer distances.

• Is cloud computing really all that safe?

• Is cloud computing as private as you think it is?