Learn about what makes up a cloud.
- [Instructor] What exactly is cloud computing? If you ask 20 different people, you will probably get 20 different answers. I remember it used to amuse me when I would hear someone say, "Don't send it to me in email, "just fax it to me because it is more secure." The problem with this logic is they think the phone network they are using is still analog. And maybe some portions of it are, but just as the rivers run to the sea and oceans, all data transmissions at some point run to the cloud.
No provider is carrying an analog and separate digital network. Every piece of data that leaves your premise traverses the cloud or the internet at some point or another. It doesn't matter if it's voice, data, of video. Let me say that again. Every piece of data that leaves your premise traverses the cloud. Most people refer to the internet as a cloud and paint a fuzzy picture of a bunch of switches and routers all connected with either copper, fiber, or wireless sending data into a gray cloud with it coming out on the other side.
One organization I was with said we were in a cloud. Then they changed their mind and said we were a virtual network. Defining a cloud is not as simple as you may think. Cloud computing is easily defined when you think of it in terms of IT. Having been in some facet of IT for over 30 years, we are always looking for ways to increase capacity, add capabilities on the fly without investing in a new infrastructure, training new personnel, or licensing new software. Cloud computing basically includes any pay-per-use service that in real time over the internet extends IT's existing capabilities.
The last organization I was with had physical servers that were at the end of life and needing replacing. So rather than continue with the traditional client-server architecture, we decided to move our system to virtual servers while we were moving them to a cloud. Why? Because this would give us increased capacity, we could add new capabilities on the fly without investing in new infrastructure, personnel, or licensing new software. Cloud computing is growing rapidly. However, it is still at an early stage in terms of maturity.
There are quite a few providers, large and small, delivering a slew of cloud services from full-blown applications to storage services to spam filtering. Yes, utility-style infrastructure providers are part of the mix, but so are Software as a Service providers such as salesforce.com, which are the largest type providers. Today for the most part, IT must plug into cloud services individually, but cloud computing aggregators and integrators are emerging quickly.
So as you can see, cloud computing is an integral part of our personal and professional lives. Let's now compare clouds to client-server environments.
This course was created and produced by Mentor Source, Inc. We are pleased to host this training in our library.