To Have a Backbone

When people think of a backbone there's a few things that can come to mind. In your body, some people refer to their backbone as their spine. In I.T, a backbone is some sort of server support or main link. More specifically, an ISP might have used an OC-12 fibre optic link as a backbone since it's very fast and reliable. Maybe, 20 years ago.

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The main definition of backbone is support. Main support that is as stated in the above example. Apple's iPhone is the main backbone of their company line of products as it brings the most revenue in. You see everyone with an iPhone. Even those poor souls who have no money.

To have courage, bravery is a backbone. In a post soviet family, Babushka is the main Backbone. When she says ne nado in Russian, there's no second guessing.

Microsoft's backbone is probably in their business services such as Azure. I doubt Microsoft makes money on Windows as they once did, or even their XBOX console.

Amazon's backbone is still online retail. Even though their business services such as S3 and EC2 do make a profit, there's more people buying things worldwide, than those enterprises paying for an on-demand service. 

Let's look at an example from CNBC where it talks about the Boeing 737 being a backbone for the company.

If you've ever flown on an airplane in your life chances are you've been on a  Boeing 737  the jets are the backbone of airline fleets around the world.

There's a lot of these planes around the world. I suppose because they're cheaper than the 747, and newer. And since there's a few crashes regarding the 737MAX, a lot of airlines don't know what to do with these planes. They will have to wait for an update.

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