Cloud Deployment Models

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Time
3 hours 51 minutes
Difficulty
Beginner
CEU/CPE
4
Video Transcription
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>> Let's talk about the different Cloud deployment models.
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There are three different Cloud deployment models.
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The Cloud deployment model
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defines where your data is stored,
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and where your applications are running.
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If your data and applications are all on-premises,
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this is called the Private Cloud.
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If your data and application is in
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an infrastructure that is managed
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by the Cloud vendor like Azure,
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AWS, Google, and so on,
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this is called a Public Cloud.
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If your data and applications are stored
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and managed on-premises and on the Cloud,
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and there is communication between
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different components of this infrastructure,
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this is called a Hybrid Cloud.
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There are certain benefits and
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disadvantages of each approach.
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Let's talk about the Private Cloud first.
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One of the benefits of the Private Cloud
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is that you can support
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any scenario because you
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have complete control of the infrastructure.
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You can install any applications,
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even legacy applications that are not Cloud enabled,
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and run them on your Private Cloud.
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As already mentioned, you have complete control of
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the infrastructure as well
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as the security of your Private Cloud.
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You can implement the security as well as you want,
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and you can completely control it.
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You can also meet any security compliance and
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legal requirements using the Private Cloud.
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However, some of the disadvantages are there are
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significant initial costs and
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there is capital expenditure,
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as we talked about before,
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in order to build this Private Cloud.
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There's also a limit to agility.
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For example, if you have exponential growth,
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you need to constantly invest new money in
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order to build bigger and bigger data centers.
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Of course, you have demand for IT skills and
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expertise in order to manage this Private Cloud.
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Keep in mind that with the Private Cloud,
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you also need to build
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some automation or install the Cloud software
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inside your private datacenter in order
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to easily manage those resources.
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What about the Public Cloud?
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Theoretically, the Public Cloud
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has high scale and agility.
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You don't need to think about acquiring new hardware
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in order to actually scale your workloads.
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This is a job done by the Cloud vendor.
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Of course, one of the benefits is that
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the Public Cloud also has pay-as-you-go pricing,
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which means that you only pay
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for the things that you use,
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and you don't pay if you
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don't need certain infrastructure.
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You also don't have any hardware
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and datacenter maintenance requirements
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with the Public Cloud.
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There are also lower technical skill requirements
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in order to manage
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your infrastructure in the Public Cloud.
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You don't need to have hardware networking skills.
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You don't need to have hardware storage skills.
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You can do all of this with just the developers.
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Of course, one of the disadvantages is
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that you cannot support all legacy scenarios.
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There are certain applications that aren't applicable for
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the Public Cloud because they require
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lower hardware access to some functionality.
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In certain cases, you may not be able to meet
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all compliance needs if you use a Public Cloud.
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You don't have control over
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the hardware and the services,
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which means that you're dependent on
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the Cloud vendor if something needs to be enabled.
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Sometimes such things may not be
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enabled for security or
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other reasons by the Cloud vendor.
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Last, some security requirements may not be
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met because the Public Cloud
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is a multi-tenant infrastructure,
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and some of the security requirements require
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dedicated hardware instances
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for running your application.
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This is where the hybrid Cloud comes in.
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Using the hybrid Cloud,
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you can support any scenario,
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whether it's legacy or modern Cloud scenario,
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you can deploy it.
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You can choose the infrastructure
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where your application runs.
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You have flexibility of choice for the applications.
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You can run legacy applications on your private side,
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and you can run modern applications on the public side.
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You can implement specific security
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and compliance requirements.
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You can satisfy any one of those because
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you have the choice between the
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private and the public side.
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Of course, you can take
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advantage of the economies of scale because
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the Cloud vendor takes care of bringing
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more infrastructure when you need it in the public side.
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Now one of the disadvantages of
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hybrid Cloud is once again,
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the requirement for initial investment
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to build your private datacenter.
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It may be hard to set up and maintain
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because it requires more knowledge on the private side,
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as well as communication
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between the private and the public side.
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