Recall & Review
beginner
What does IaaS stand for and what does it provide?
IaaS stands for Infrastructure as a Service. It provides virtual machines, storage, and networks that you can control and manage, like renting a computer in the cloud.
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beginner
How is PaaS different from IaaS?
PaaS stands for Platform as a Service. It gives you a ready-to-use platform to build and run apps without managing the underlying servers or infrastructure.
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beginner
What is SaaS and when do you use it?
SaaS means Software as a Service. It delivers ready-to-use software over the internet, like email or office apps, so you don’t have to install or manage anything.
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intermediate
Which cloud service model lets you manage applications but not the servers?
PaaS lets you manage your applications and data but the cloud provider manages the servers and infrastructure.
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intermediate
Match the cloud service model to its example: Azure Virtual Machines, Azure App Service, Microsoft 365.
Azure Virtual Machines = IaaS, Azure App Service = PaaS, Microsoft 365 = SaaS.
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Which cloud model provides the most control over the operating system?
✗ Incorrect
IaaS gives you virtual machines where you control the OS, unlike PaaS or SaaS.
Which service model is best when you want to focus only on using software without managing infrastructure?
✗ Incorrect
SaaS delivers ready-to-use software, so you don’t manage infrastructure or platforms.
Azure App Service is an example of which cloud service model?
✗ Incorrect
Azure App Service provides a platform to deploy apps without managing servers, so it is PaaS.
Which cloud model requires you to manage the operating system and applications?
✗ Incorrect
In IaaS, you manage OS and apps; in PaaS and SaaS, the provider manages more layers.
Microsoft 365 is an example of which cloud service model?
✗ Incorrect
Microsoft 365 is software delivered over the internet, so it is SaaS.
Explain the main differences between IaaS, PaaS, and SaaS using a real-life analogy.
Think about what you manage and what the provider manages.
You got /3 concepts.
Describe a scenario where using PaaS would be better than IaaS or SaaS.
Focus on app development without infrastructure hassle.
You got /3 concepts.