INTRODUCTION TO CLOUD COMPUTING
Introduction to cloud
computing so we're going to be talking about what cloud computing is. Now the
cloud computing is latest and greatest thing and going to be the latest and
greatest thing forever. Marketers and lots of big companies are all using cloud
computing terms in their marketing campaigns to make them more impressive, so
they can get clients and get customer and get money out of your pocket.
All you
know right now in November of 2015 the Microsoft is running a new ad campaign
with into the cloud where somebody sits down at their computer and there's a
hole flashy thing and go into the cloud and it's really cool fancy. Now problem
is most people don't really understand what cloud computing is cloud computing
is in overall philosophy and design concept and its much more complicated and
yet much simpler, than why didn't people give it credit. So this introduction
to cloud computing is going to be talking about the technologies that are
involved with cloud computing. The first thing that you should understand with
cloud computing is basic concepts underlying concept is that with cloud
computing you are trying to separate the applications from the operating systems
from the hardware that runs everything,
So what do I mean by that is? Well back in the day back when I started in
computers if you had an email server for your company what that meant was you
Add server hardware sitting somewhere near Company so you had a server with a CPU,
ram ,hard drive power supply and all that. On that hardware, you install server
operating system on them see you had the server hardware and then you installed
Windows NT server for back in the day and then on top of Windows NT operating
system you install Microsoft Exchange Server. So now in order to provide email
services to all the people in your company, you had Microsoft Exchange Server
install on Microsoft NT Server operating system which is installed on server
hardware. All that was a bundle, the problem with this is that exchange server
is now dependent on everything below it. So if there is a problem in the
operating system, if the operating system gets a virus or if a hard drive is
just clocked up with your information or if there is an error etc.
Your exchange
server which means your email services, you will no longer get your email
services because the operating system has failed for whatever reason. Again
just like that with the server hardware, if the CPU fan stops or your CPU burns
out or the hard drive fails or the power supply fails etc. So that of course shuts
down the operating system and that of course will shuts down your email server so
it automatically shuts down email services for all the people on the network.
So in the old days email services or whatever network services world, all were
relying on everything below them. So you have the service in the application installed
on the operating system which is installed on hardware. So if the hardware fails,
your service went down. If the operating system failed your service went down. The
idea of cloud computing is that you are trying to disconnect the application and
the operating system and the hardware from themselves. So you may have heard
about the virtual computer.
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