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An Introduction to SaaS and Cloud Computing. Ross Cooney. The hype. Cluster Computing Cloud Computing Grid Computing . What is the cloud ?. IT as a service Cloud allows access to services without user technical knowledge or control of supporting infrastructure

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Presentation Transcript
the hype
The hype

Cluster Computing

Cloud Computing

Grid Computing 

what is the cloud
What is the cloud?
  • IT as a service
  • Cloud allows access to services without user technical knowledge or control of supporting infrastructure
  • Best described in terms of what happened to mechanical power over 100 yrs ago
  • Now computers are simple devices connected to the larger cloud
  • Data processing, storage and software applications that used to run locally are now being supplied by big central computing stations. They're becoming, in essence, computing utilities.

What is

Cloud Computing?

slide4

SaaS

Software as a Service

PaaS

Platform as a Service

IaaS

Infrastructure as a Service

slide5

SaaS

Software as a Service

slide6

SaaS

Software delivery model

  • Increasingly popular with SMEs
  • No hardware or software to manage
  • Service delivered through a browser
slide7

SaaS

Advantages

  • Pay per use
  • Instant Scalability
  • Security
  • Reliability
  • APIs
slide8

SaaS

Examples

  • CRM
  • Financial Planning
  • Human Resources
  • Word processing

Commercial Services:

  • Salesforce.com
  • emailcloud
slide9

PaaS

Platform as a Service

slide10

Platform delivery model

  • Platforms are built upon Infrastructure, which is expensive
  • Estimating demand is not a science!
  • Platform management is not fun!

PaaS

slide11

Popular services

  • Storage
  • Database
  • Scalability

PaaS

slide12

Advantages

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

PaaS

slide13

Examples

  • Google App Engine
  • Mosso
  • AWS: S3

PaaS

slide14

IaaS

Infrastructure as a Service

slide15

Computer infrastructure delivery model

Access to infrastructure stack:

  • Full OS access
  • Firewalls
  • Routers
  • Load balancing

IaaS

slide16

Advantages

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

IaaS

slide17

Examples

  • Flexiscale
  • AWS: EC2

IaaS

slide18

SaaS

Software as a Service

PaaS

Platform as a Service

IaaS

Infrastructure as a Service

slide19

SaaS

Common Factors

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

PaaS

IaaS

slide20

SaaS

Advantages

  • Lower cost of ownership
  • Reduce infrastructure management responsibility
  • Allow for unexpected resource loads
  • Faster application rollout

PaaS

IaaS

slide21

SaaS

Cloud Economics

  • Multi-tenented
  • Virtualisation lowers costs by increasing utilisation
  • Economies of scale afforded by technology
  • Automated update policy

PaaS

IaaS

slide22

SaaS

Risks

  • Security
  • Downtime
  • Access
  • Dependency
  • Interoperability

PaaS

IaaS