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3 Cards in this Set
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Software as a service |
Providers install and operator application software in the cloud . Users access the software from cloud clients. Pricing model is monthly or yearly fee per user so price is scalable and adjustable. Users access applications and its associated data directly from the cloud without letting them install on the machine using a client like web browser over the internet. Examples: Google apps, Microsoft 365 , quickbooks online et cetera. |
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Platform as a service |
Providers deliver computing platform including OS,programming language,execution environment, database and web server. Application developers develop and run the software on a cloud platform without the cost and complexity of buying and managing the underlying hardware and softwares. Users provided with a container environment to run a test the software where all the software requirements are already satisfied. This is beneficial for computer science students as they can get access to licenced software like Matlab from anywhere. Examples: Google app engine, Microsoft Azure. |
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Infrastructure as a service |
Providers give computers as physical or virtual machines which can be worked on as guest users . These virtual machines are maps to the real systems. When client interacts with IaaS service and request resources from virtual systems these requests are directed to real servers that do the actual work. Users deploy the apps by then installing OS images on machines and application software ; the cost charged reflects the amount of resources allocated and used.
Work done is measured by the number of transactions per minute.
Examples include Amazon EC 2, Google compute engine, etc.
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