Cloud Service Models

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Time
3 hours 51 minutes
Difficulty
Beginner
CEU/CPE
4
Video Transcription
00:00
The last thing we'll talk about in this module is the so called Cloud Services models.
00:07
The National Institute of Standards and Technologies outlines three different service models that are crucial for understanding the cloud.
00:15
Those three service models are compared to the traditional model for pricing software applications in your own data center, also called the on premises model.
00:25
If you have your own data center on premises, you are responsible for buying, setting up and managing the whole stack for your application.
00:34
This includes hardware like networking, storage and servers.
00:39
You also need to configure the virtualization, install the operating system on the servers and set up any middleware and run times that your application will need.
00:48
At last,
00:49
you need to deploy your application and manage the data it stores and uses.
00:54
The first Cloud Service model is called infrastructure as a service,
00:58
infrastructure as a service is very similar to the on premises model.
01:02
However, in the case of infrastructure as a service, the cloud vendor is responsible for managing the hardware in the virtualization layer, giving you complete control on the choice of operating system and the rest of the stack.
01:15
Of course, you pay some price for the services provided by the cloud vendor.
01:19
The benefit of this model is that you don't need to deal with setting up and managing the lowest level components of the stack.
01:26
And, more importantly, you don't need to spend tons of money initially to buy the hardware, Acquire a building and deal with utilities.
01:36
Platform as a service or
01:38
pause is the next level of instruction.
01:42
In this model, the vendor manages everything else except your application and data.
01:47
This is very useful for rapid development of applications because development teams don't need to spend time managing the infrastructure and the runtime components.
01:57
The last model is called software as a service.
02:00
In this case, the vendor manages everything and you just consume the software.
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