The cloud (simple explanation of SaaS, IaaS and PaaS)

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Post on 02-Dec-2014




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Discussed the cloud with my friend and threw this together on the fly.


  • 1. The Cloud (as I explained to my friend) Allen Prattis
  • 2. SaaS (Software as a Service) Allowing users to access specific applications on-line Advantage Charge on a subscriptions basis Disadvantage Generic applications may not work
  • 3. PaaS (Platform as a Service) Provide environment to allow for users to create their own web applications Azure Microsoft App Engine Google SalesForce Pros Build and Run one application for Free RAD (rapid application development) Private or public deployment Cons Build and Run one application for Free Limits developers to tools provided by the PaaS developer Risk of Vendor lock in
  • 4. Iaas (Infrastructure as a Service) Allow business to run whatever applications that the business has to a cloud suppliers hardware Migrate applications to the suppliers hardware Physical or virtual servers Virtualization allow for suppliers to share physical servers Pros Lower IT costs
  • 5. IaaS Types Private Cloud Dedicated Hosting Customer rents physical servers on demand Cost and numbers of servers matching their demand Hybrid Hosting Most secure and costly Mix of physical and virtual servers are hosted on demand of the customer to reduce costs and increase flexibility Cloud Hosting Customer rents virtual servers on demand and often on an hourly basis
  • 6. IaaS Vendors Amazon Web Services Offers many options Preconfigured software from Oracle, IBM, etc Rackspace Private cloud to Cloud Hosting GoGrid Cloud hosting, Hybrid hosting, Dedicated hosting