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Serverless Computing : The Technology Behind That Instagram Link You Got Instantly

DEV Community·Anushka Shinde·6 months ago
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#how#why#serverless#cloudcomputing#function
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That Interview Moment

I was asked about serverless computing in an interview.

Honestly? I panicked inside. But then I remembered something

Instagram. Influencers. Product links.

When someone comments on an influencer's post asking for a product link they get it automatically. Instantly. No human sent that. No server was sitting idle waiting for it.

Something triggered. Something responded. Something scaled to handle thousands of comments simultaneously without breaking.

That something is serverless computing.

I said exactly that in my interview. At that moment I didn't fully know

what was behind that functionality.

Now I do. Let me explain it properly.

What Is Serverless Computing?

Serverless computing is a cloud execution

model where:

You write functions

You deploy them to a cloud provider

They execute only when triggered

You pay only for what you use

You never manage a server yourself

The name is slightly misleading servers still exist.…

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