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Next, we have software as a service or SaaS.

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And this is going to be, by far, the most popular service model that we need to

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discuss.

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Everybody in IT has used SaaS at some point, and I would argue that probably

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the majority

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of people on the internet have used SaaS at some level.

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The most popular, of course, being email services.
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The most popular, of course, being email services.

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From Outlook.com to Gmail to Yahoo mail.

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There's, of course, thousands of other ones.

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But there's literally thousands, if not hundreds of thousands, of platforms out

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there offering

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software as a service.

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So let's jump in and talk about what that really means.

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And of course, we'll talk about some of the examples.

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But again, with how many there are, we're going to be talking about a very,

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very small

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subset of SaaS services.
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subset of SaaS services.

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So with the software as a service model, if we take a look at our diagram again

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, we'll

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notice that it's a little bit different this time.

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The entire stack from application all the way down to networking is all now the

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responsibility

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of the service provider.

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The end users will simply be accessing the application directly, and everything

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in that

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application and below is handled by the service provider.
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application and below is handled by the service provider.

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So the difference between software as a service and platform as a service that

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we talked about

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previously is the service provider is now picking up the responsibility for the

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data and

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the application running in the environment.

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That of course includes updating the application and everything else involved

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in presenting

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that application to the customer.

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The customer's only involvement in this model is to actually use the supplied
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The customer's only involvement in this model is to actually use the supplied

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application

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or applications that are being offered by the service provider.

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The customer has absolutely no access to the underlying infrastructure and

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again would

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have no knowledge whatsoever as far as what's running underneath.

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Just as an example, think of something like Gmail.

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Gmail, we don't really know what operating system or runtimes or language they
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Gmail, we don't really know what operating system or runtimes or language they

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're using

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underneath what type of servers it's running on.

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We don't really know anything about the underpinnings of how Gmail operates

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aside from maybe any

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information that Google decides to publish.

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Of course, they can make that information available if they choose to.

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But from the software as a service side of things, we have no visibility into

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that whatsoever.

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Generally speaking, we're going to be accessing these applications usually

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through some sort
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through some sort

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of a web interface or possibly a specialized application.

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One example that comes to mind there is things like Dropbox or Microsoft's One

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Drive.

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Yes, you can access those through the web interface as well.

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But there's also a specialized application that you can of course install on

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your devices

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to make that drive appear as if it's a local drive on your computer.

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And then you can just copy files in and out of it as if it were any other
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And then you can just copy files in and out of it as if it were any other

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folder on your

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computer.

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So of course, there can be multiple different choices on how to access these

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services.

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Another pretty cool thing is many of these offerings have both individual and

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business

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offerings.

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We'll go back to Gmail as an example.

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I have a personal Gmail account that I use.

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However, as a corporation, you can actually use your fully qualified domain

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name to direct
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name to direct

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corporate email to Gmail as well.

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You can use Gmail as your email service for your company.

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So that's just a small example of an SaaS provider that has both individual and

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business

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plans.

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But again, the biggest advantage to this whole thing is it's up to the provider

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to manage

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the entire environment.

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The end user, the customer has no control in any of this.
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The end user, the customer has no control in any of this.

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We simply use the applications that are provided.

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Now as I mentioned earlier, there are thousands, if not hundreds of thousands

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of examples,

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but just some incredibly popular ones that popped into my head right away.

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You have for example, Dropbox.

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We already mentioned Gmail, the Microsoft 365 suite, OneDrive, Salesforce,

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Slack, Zoom,

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Cisco's WebEx, and there's many more.
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Cisco's WebEx, and there's many more.

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Some other ones that come to mind even besides this list, you have like Lucid

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Charts, which

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you can use for network diagramming.

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You have Asana, Jaira and AirTable, which are all like project management

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packages, of

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course, Google Docs being very similar to Microsoft 365.

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Just to go to the gaming side for a minute, how about Amazon Luna is an online

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cloud-based

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gaming platform where they're actually offering games up as the service.
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gaming platform where they're actually offering games up as the service.

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There's an SaaS called Confluence, which you can use for things like network

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documentation

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and all sorts of different things.

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There's online video, picture, and documentation conversion services.

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Even Adobe for example has an online converter to convert things into PDF

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format.

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So there's lots of different choices like this.

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There's also some gray areas.

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I've seen a lot of argument such as are things like Netflix, Amazon Prime Video
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I've seen a lot of argument such as are things like Netflix, Amazon Prime Video

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, Hulu, things

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like this.

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Are they software as a service or are they more of a streaming platform?

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Again, I can sort of see that argument either way, but nonetheless, there's

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literally thousands

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of different software as a service platforms out there that you can access and

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use services.

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So in this video, we talked about software as a service.
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So in this video, we talked about software as a service.

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And of course, the huge advantage to this is we don't have to do anything.

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Often, all you need to do is literally make an account.

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Once you have an account with these SaaS providers, all you have to do is go

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use their application.

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Now, some of these can even be cross-platform.

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In other words, I mentioned earlier that there's something called Lucid Charts,

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which I use

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a lot for network diagramming.

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You can have that save directly to your Microsoft OneDrive or your Dropbox
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You can have that save directly to your Microsoft OneDrive or your Dropbox

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account.

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So you can have all your documents in one place and still use these online

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services.

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So like we said, there are literally thousands of these services available.

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I'm sure you have a whole bunch that you use that I didn't even mention here.

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Of course, most of the ones I mentioned also have competitors that are also

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very good.

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So of course, you have to find the SaaS services that work best for you.
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So of course, you have to find the SaaS services that work best for you.

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But the main thing we need to know coming out of this video is that we don't

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have to

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do anything to support these applications.

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All of it is done by the cloud provider and that's the service that they're

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offering.

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Now next up, we have to talk about something called anything as a service,

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which isn't

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necessarily a model so much as it is terminology.

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But let's go ahead and jump in and take a look.
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But let's go ahead and jump in and take a look.

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