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Any program, software or an application is built using a set of instructions that computers will understand.



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Usually these instructions are written in something called high level languages.



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Examples are C, Java, dot net, python, etc..



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In order to write these instructions, an application developer uses a text editor like Notepad, Notepad,



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plus plus or advanced editors like Sublime or Eclipse.



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So in essence, we can say that the journey of an application begins with a text file, with a set of



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instructions.



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Now, what do you think will happen if an application developer starts to distribute this file with



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a set of instructions?



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Will the file work as an application?



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Can we distribute it to various users and ask them to use the application?



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Absolutely not.



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If an end user double clicks on the file, it will just open the set of instruction but does not run as a program.



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So in order to make it as a program, the text file with a set of instructions has to be treated with



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a special process and make it more suitable to run on all kinds of platforms.



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Let us take a real life analogy to understand this better.



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Consider all the ingredients to prepare a pizza.



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Now, can a restaurant put all these in a box and send it to a customer?



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Will the customer be able to enjoy the pizza as as a pizza?



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Absolutely no.



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So what has to be done to make this pizza ready to eat?



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All these ingredients need to undergo a process of cooking to get them ready to eat.



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pizza.



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Now the restaurant can pack this pizza and delivery to end customer who can directly consume it without having



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to know how to cook.



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So the important step in converting the ingredients into a pizza is cooking.



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Similarly, the process of converting a text file with a set of instructions into a file that can run



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on any platform is called compiling.



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And the resulting compiled file is called the Portable Binary.



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Portable because it can be downloaded by thousands of users and run as an application without the end



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user having to know how the programming works.