Cloud Service Types

Question 1

Why are the most important/popular types of Cloud Services?

Answer 1

• Infrastructure as a Service (IaaS)
• Platform as a Service (PaaS)
• Software as a Service (SaaS)

Question 2

What does “as a Service” entail?

Answer 2

• you can rent it for a short time, if you wish instead of buying it
• no commitment if you wish
• Pay for what you use (time, gb, or other)
• Cloud providers takes of care of buying, developing and maintaining it

Question 3

Describe Iaas

Answer 3

• essentials services of technology
• > Computing
• > Storage
• > Networking
• generally have “real world” equivalents in your own center
• cloud replacements of the real world

Question 4

Describe IaaS Computing

Answer 4

• one example is Azure Virtual Machines
• pay by the seconds
• many choices in CPU needs, RAM and optimization

Question 5

Describe IaaS Networking

Answer 5

• Virtual Networking is an example of this
• virtual Networks don’t cost anything
• There are ingress and egress bandwith costs

Question 5

Describe IaaS Storage

Answer 5

• one example: Azure Storage
• 5 PB of storage capacity
• can handle blocks, files queues and tables
• can also be configured as a data lake

Question 6

Describe Paas

Answer 6

• cloud service providers provide more than just “basic” infrastructure
• includeds service layer on top of IaaS - computing, sotrage and networking
• middleware, development tools, database server and more

Question 7

Describe PaaS Computing

Answer 7

• example: Azure App Services
• simply upload your code and configuration to Azure and it runs your code without you needing to woorry about the vm underneath
• includes scaling features, CI/CD, containers, staging and development environments

Question 8

What is Pass Storage?

Answer 8

• Examples: Managed Stores/Azure SQL Database
• freed frin worrying about the server vm itself or the hard disk itself

Question 9

What is PaaS Networking?

Answer 9

• example: Azure Front Door
• or Load Balancer
• software applications that perform netwokring tasks

Question 10

What is SaaS

Answer 10

• full fledged apps
• Cloud apps
• Tools such as Office 365, OneDrive, Skype
• app is ready to be used and you simply need to set it up

Question 11

What is “Serverless”?

Answer 11

• effectively a pricing model
• some services in Azure offer a “serverless”-option
• paying for service not renting hardware
• there are servers but you don’t pick or care about them
• scales automatically with demand
• much harder to calculate cost because of dynamic nature
• can also spin down to zero when it is not used
• example: Azure Function

Question 12

Which Cloud Service Type is a complete Development and deployment environment in the cloud?
What part of the application lifecycle does it support?

Answer 12

• Platform as A Service
• supports whole web application lifecycle:
• building, testing, deploying, managing and updating