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[MUSIC]

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Hi friends, I'm Scott Hanselman,
I work at Microsoft on ASP.NET Core and

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open source .NET Core.

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And I'm gonna show you Azure App Service,
and we're gonna talk about deploying or

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publishing an ASP.NET Core
application to Azure.

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Now there's a lot of stuff going on in
Azure and it can be kind of confusing.

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So I'm gonna try to explain
the difference between when you hear PaaS,

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Platform as a Service or IaaS,
Infrastructure as a Service.

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You know, what is App Service?

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How do you get a website
up into the cloud?

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And, how is that different from just
setting up a virtual machine somewhere and

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then publishing to that?

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I also wanna point people
to try.azurewewbsites.net.

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If you don't have an Azure account and
you're not really interested in doing

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a trial but you still are interested
in following along or

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trying out Azure App Service, you can do
it up there without a credit card and

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it gives you a time-limited App Service.

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Basically, it gives you a couple
of hours of App Service.

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You can go in here, you can pick your Web
App, you can say I want ASP.NET Core 1.0,

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pick Node, pick Java,
whatever makes you happy.

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And then go and create that and
it will just let you sign in,

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you can use your GitHub, use your Google+,
and will make you a little tiny free

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website that you can then play with and
it'll expire in a couple of hours.

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So it's a nice no money, no effort,

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no commitment way to try
out Azure App Service.

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All right, so let's do this.

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I'm gonna just pop over
here to PowerPoint.

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Cuz I know that we all love to see
PowerPoint when we're learning about code

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but trust me, it'll be short and
it'll be worth it.

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These are some of the things that
you get when you come to Azure.

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This is the standard boxes and
lines dialog, boxes and

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lines slides that people see.

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Azure Storage, that's that global storage,
it's like a disk for everybody that's up

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there in the Internet, is the base of
Azure, that where everything happens.

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So when you make a virtual machine
in Azure, when you go into Azure and

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you do File > New Virtual Machine, that
virtual machine gets stored somewhere,

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it gets put in Azure Storage.

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Now there are other boxes that
we're not gonna talk about,

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we're gonna talk about web sites, right?

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Azure App Service,
where you're gonna put your web site.

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That of course sits on a virtual machine,
right?

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A virtual machine has to be there always,
right?

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And a virtual machine, of course, lives on
a physical machine that is, in this case

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though, hidden from you by Azure, and your
disk is hidden from you by Azure Storage.

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So there’s a series of kind of what
we call lies or layers of abstraction

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between you and the real metal,
but that’s the magic of the cloud.

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And that is really the difference between
a cloud-based host like Azure and

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your more cheaper commodity hosting.

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One way to look at it is,

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if I use a host in my local city
I can visit my computer, right?

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You could go and buy a cheap host and
then go downtown, find that computer,

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and find the disk that
your site is running on.

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You could say, show me my computer, and
they would take you into a data center and

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point to it, and they'd say there it is.

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That's nice because you can feel good
about your disk and you can see it, but

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it's also bad because if that disk dies,
then your website goes down.

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One of the great things about the cloud
is that Azure Storage is hiding all of

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the complexities of the disk from you and
also doing what's called georeplication.

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It's putting all of the bytes that you
put on a disk, in fact, on three disks.

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Your site exists in three
places at all times, so

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you're guaranteed not to lose your stuff.

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That's a really important
aspect of publishing to Azure.

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And it's one of the many ways that
it differs from commodity hosting.

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So let's look at it a simpler way,
all right?

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If I made a virtual machine on Azure,
I can really do anything I want to.

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I could put .NET on it,
.NET Core like we're gonna do today.

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But I could put anything,
cuz I own it, right?

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It's like buying your own home.

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You can do whatever crazy stuff
you want to inside your home and

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that is your right, okay?

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But you manage your home,
you own it, you manage it.

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And if you do something stupid
that breaks the house, well,

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you're gonna have to fix the house and
it's your fault.

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It's not Azure's fault.

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But some people, they want a more
of an Uber or a Airbnb style where,

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you know I don't really wanna
think about my house or my car.

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I just want a website.

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It does limit you a little bit.

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You can't do anything you want but you
can still do .NET and Node and Java and

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PHP and Python and on and on.

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But then Azure will manage the operating
system for you, manage all of the updates.

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So if something comes out like a new
bad bug with a creative name, you don't

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have to wake up in the middle of the night
and go and patch your virtual machine.

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Just as if your roof starts leaking,
you don't have to get on the roof, right?

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You're gonna go and

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you're gonna call the landlord and
let them deal with that for you.

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So that's another way that this
differs from commodity hosting,

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is that Azure handles stuff for you.

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You're a web developer,
not a homeowner, and

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you'd really like just to think about
your web application and run it up there.

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So let's do that and
see some of the secrets of how that works.

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But also, let's remind ourselves that no
matter what we do up here in the web site

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world, there is always a virtual
machine underneath us.

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Just as when you rent a house,

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there is a landlord out there that
has to think about that house.

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So you'll be a better developer and
you'll be a smarter developer,

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if you can live in both worlds and
understand that both worlds exist.