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- [Instructor] Let's wrap up
this lesson by talking about,

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some Cloud Concerns,

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that you should know for the A+ exam.

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The first is On-demand computing,

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and that's what it's all about,

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when it comes to cloud services.

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You want the computing to be on demand.

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You want it to be available in real time,

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whenever you need it.

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24 hours a day,

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seven days a week.

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And with on demand,

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computing resources are
made available to the user,

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as needed.

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Now we're not talking time,

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we're talking about what
resources are needed.

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Only the specific amount of CPU power,

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and Ram,

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and network bandwidth,

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and storage space,

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are given to each user.

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And this is important,

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you don't wanna have the user,

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gaining too much access,

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or getting too many resources,

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and you don't want the
user to get too little.

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You want them to get
what they're paying for,

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but no more than that.

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And so this is important
from a customer standpoint,

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the customer wants to make sure that,

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they are getting what they need,

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but as a network admin
working for a cloud service,

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you wanna make sure that you're providing,

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only what they need.

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So, along those lines,

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the next term is,

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Measured Services.

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And this is when,

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the provider,

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the cloud provider,

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monitors the services rendered,

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so that the provider can
properly build a customer,

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but also make sure that the customer's,

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use of the services,

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is being handled in
the most efficient way.

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This analysis lets the admin know,

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that everything is working properly,

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and that each user of
a particular customer,

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is getting what they need,

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and then it can be billed appropriately,

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and then the customer
can see this information.

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They can see exactly,

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what they are getting,

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what they're supposed to get,

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and what they're paying for.

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This helps them with their cost analysis.

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So, as a customer,

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you wanna make sure that you
are getting measured services,

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you wanna make sure that you can analyze,

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exactly what you're getting.

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And audit that information,

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make sure it is what you're paying for.

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- [Instructor 2] Measured services,

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can work in conjunction
with a pay service called,

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Metered Services.

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Where an organization has access,

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to virtually unlimited resources,

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but only the resources that are used,

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are what are paid for.

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And this should be measured carefully,

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and again the details of the resources,

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should be stated clearly every month.

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- [Instructor 1] Next is Rapid Elasticity.

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And this is the ability to build up,

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your cloud-based network,

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in a scalable fashion.

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When you choose a provider,

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you wanna make sure that the
provider has a scalable model,

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because if your company is gonna grow,

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then your access to the
cloud must grow with it.

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Individual users might need
more resources over time,

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and the entire company as a whole,

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might need more resources,

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As time goes on.

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That on demand computing,

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needs to be elastic,

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it needs to be,

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pliant,

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so that it can stretch,

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to provide for the user's growth,

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and for the company's growth.

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And finally,

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Resource pooling.

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Resource pooling,

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is when servers are grouped together,

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and the infrastructure in the cloud,

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is used by multiple customers.

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But still in a way that is on demand,

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when needed,

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and scalable.

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And again this is important,

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you want to be able to scale,

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you want this cloud service to be elastic.

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You wanna be able to grow with it.

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But in many cases,

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it's too much money to do it by yourself.

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For a mid-size company,

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or a small company,

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it's often too expensive.

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So you share,

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in a community environment,

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and you know this happens a lot,

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and you don't even notice it.

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There might be a provider that has,

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a super powerful multi Zion server,

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that has a server operating system on it,

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that runs virtual machines.

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And it could have a dozen,

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or two dozen,

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or three dozen,

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different virtual machines on there,

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that are servicing many customers.

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And this is very common,

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you have to keep this in mind.

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So resource pooling,

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very important for a cloud provider,

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to be able to offer this,

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and it's something that you
wanna look for as a customer,

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so that you can save money,

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by sharing the resources,

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of a group of organizations.

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Now this happens all the time,

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it happens with servers on the cloud,

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it happens with your internet connection,

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if you have a cable internet connection,

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or a fiber based connection,

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you're ultimately sharing the bandwidth,

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with other people when it
gets to the central core.

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So anytime you connect out,

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to the internet,

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you're almost always
sharing at some point.

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So those are some of the
cloud concerns you wanna know.

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For the most part,

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what companies are interested in,

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is where are their data,

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and apps gonna be stored,

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and will they have fast access to them,

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and will they have enough storage,

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to increase over time?

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And there's a lot of providers out there,

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that allow for this.

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For example,

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iCloud,

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many people have apple devices.

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And it's so much easier,

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to store their data,

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on the cloud than it
is to store it locally.

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Music, photos, videos,

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and other data.

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It's just so much easier
to put this on the cloud,

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so the Apple's iCloud became so powerful,

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and such a big player so quickly,

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because people wanted to
store the stuff online,

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it was just easy for them,

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easy access on demand,

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quick,

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and iCloud was right there for them.

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So that's one of the big providers.

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Then you have Microsoft's One Drive,

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and then you have Google Drive,

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and Google has lots of
other cloud services.

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And then you have Dropbox,

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which is used by a lot of companies,

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and Amazon Cloud Drive.

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And Amazon has lots of
other services as well.

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So these are some of
the providers out there.

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Take a look at some of the providers,

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and what those services
are that they offer.

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You may be interested in,

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the free services,

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and then some of the pay services,

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that are offered by these companies.

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And that pretty much wraps up the lesson,

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for the A+ exams,

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you don't really need to know,

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too much about the cloud,

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but you wanna know the basics,

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you wanna know the difference between,

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software as a service,

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infrastructure as a service,

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and platform as a service.

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Know those types of clouds,

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the different types of
clouds out there that you,

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might utilize,

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with your company,

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or individually,

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and some of these cloud concerns.

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And keep in mind that,

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it's gotta be on demand.

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You gotta have access to it all the time.

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It's gotta be quick and efficient,

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that's what it's all about with the cloud.

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As a customer,

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you want to apply all these concepts,

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that we just talked about.

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You wanna think about these,

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as you before you sign any
type of service contract.

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As an end user,

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you want to use the service
that is the cheapest,

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hopefully free,

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and easiest and fastest.

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And one that is secure.

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As an admin for a company,

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you wanna make sure that
the data is accessible,

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that the platform,

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or infrastructure is accessible,

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and has good uptime,

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We're talking about 99.99,

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or 99.999% uptime,

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and you wanna make sure
it's secure as well.

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That's about it for this lesson.