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[MUSIC]

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HI, I'm Jonathan,
a teacher here at Treehouse.

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In this workshop I'll introduce you to
a common pattern used in many different

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programming languages and
programming frameworks.

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Very popular tools like Laravel for PHP,
Ruby on Rails, Pythons Django framework,

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ASP.NET, iOS, Express in JavaScript and

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Spring for Java all use the MVC pattern or
some close variant.

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But what exactly is MVC?.

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MVC is an acronym that stands for
Model View Controller.

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It isn't a language or
specific technology,

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it's a way of thinking about and
structuring a computer program.

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We call it a programming pattern.

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A programming pattern is a way of
organizing a programs logic to handle

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common tasks or solve problems.

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Most web applications
perform similar tasks.

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A visitor requests a page from a website,
for

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example, requesting information
about the movie Toy Story from IMDb.

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The website collects
the information from a database,

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all the facts about Toy Story when it was
released, who stars in it, and so on.

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The site organize that
information into a presentation,

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the layout of the webpage with
specific data and photos and finally,

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sends that web page back to the visitor
who views it in their browser.

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That same pattern is true whether you're
IMDB, Amazon, Facebook or Google.

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Each site does different things, but

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those basic tasks are common
between all of them.

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The MVC pattern provides a way
of organizing common tasks

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into very clear responsibilities.

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The C or controller handles all
communication between the user and

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other parts of the application.

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The M, or model,
handles and retrieves data.

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While the V, or view, organizes that
data into a visual presentation.

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While this may sound like unnecessary
organization, in the next video

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I'll explain why you'd want to use the MVC
pattern to build your applications.