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Modern Web applications now, as I said before, applications were on the world.

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But how did this happen?

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Well, the next few minutes, we're going to answer that question.

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So in the last 20 years or so, application development has changed.

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Well, let's just say dramatically.

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As time goes on, existing technologies evolve and new ones arrive.

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So when you analyze a Web application, you're going to see a bunch of technologies such as programming

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languages, markup languages, scripts, frameworks, media files and so on and so forth.

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Oh, and by the way, Weber Mobile, it doesn't matter which the applications you use every day are

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not just built on a one particular programming language or on a single platform.

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They generally have a very complex background.

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So let's have a look at technology stocks.

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For some known Web applications, go to Stack shared IO.

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So it's a good website to learn about the technology stack behind known application.

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You can open it and have a look into almost any application used daily by people around the world.

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You can follow your favorite tools and get feeds about them as well, or let's say you're going to start

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a new project and you have an idea about developing a technology.

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So here's also a good place for that to start.

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Also, you can compare and explore tools as well as observe their pros and cons.

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But we don't necessarily have a purpose of development here, I just want to show you around and show

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you how different technologies can be combined in order to present a webapp.

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So let's click on Browse Stacks from the menu above.

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Now, I'm sure when you scroll down, some of these names seem pretty familiar to you, Airbnb, Facebook,

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Spotify, Netflix, many more.

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OK, so let's click on Netflix.

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And yeah, so here is the stack behind Netflix.

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Now, you've probably heard of most of them, but you can also get some new ones.

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OK, so I do this in order to show you how the technology stack behind modern day applications can vary

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widely.

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And the point I'm emphasizing here is as a Web pen tester, what's going to be your attitude?

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Do you have to know all of these technologies or what?

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Well, definitely not.

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Although being familiar with some of them can help you to understand the test flow better, you don't

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need to know all of them.

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We just need to know the key and some of the basic technologies.

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But I will strongly advise you to have some experience, at least in one platform.

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It is going to be helpful for you and better serve you in the future.