3.5 KiB
3.5 KiB
- #CT216 - Software Engineering I
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- Next Topic: Software Processes
- Relevant Slides:
- What is Cloud Computing? #card
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- Cloud Computing is a model for enabling convenient, on-demand network access to a ^^shared pool of configurable computing resources^^ (e.g., networks, servers, storage, applications, & services) that can be rapidly provisioned and released with minimal management effort or service provider interaction.
- What is a Public Cloud? #card
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- Amazon, MS Azure, & Google Cloud are examples of public clouds.
- Any member of the public can sign up and start provisioning computing resources within minutes.
- They are highly scalable and allow an organisation to grow its infrastructure rapidly.
- What is a Private Cloud? #card
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- Computing resources are dedicated to a single customer and not shared with other customers.
- Considered to be more secure.
- What is a Hybrid Cloud? #card
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- A hybrid cloud is simply a mix of public & private cloud resources.
- An organisation may choose this option if there is a mixture in the criticality of their data or computational requirements.
- Data that doesn't require heightened security can be pushed onto the public cloud, while data which does can be hosted on the private cloud.
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Cloud Services
- What is SaaS? #card
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- Software as a Service (SaaS) provides users with (essentially) ^^a cloud application, the platform on which it runs, & the platform's underlying infrastructure.^^
- What is PaaS? #card
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- Platform as a Service (PaaS) provides users with ^^compute, networking, & storage resources.^^
- What is SaaS? #card
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- What are the advantages of cloud computing? #card
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- Elasticity - if your application becomes very popular, you can procure new resources within minutes.
- Reduced capital expenditure.
- Economies of scale.
- What are the disadvantages of cloud computing? #card
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- Security / privacy
- Cost
- Migration issues
