Tech Talk: Frontend Vs. Backend

bootcamp-day06

The frontend is the part of a web site that you can see and interact with, while the backend is all the rest.

By Adda Birnir (Co-Founder, Balance Media & Skillcrush)

The frontend is the part of a web site that you can see and interact with, while the backend is all the rest.

You know how the tip of an iceberg pokes out above the water, but they’re really hundreds of feet deep? That’s a lot like a web site. The parts you see and interact with on a web site – the buttons, the dropdown menus and big bold fonts – make up the frontend.

The frontend of a web site has specific technologies attached to it. HTML makes up the text on the page, CSS makes it pretty, and JavaScript makes it interactive. All of these things happen in the browser.

The backend is everything that happens before it gets to your browser. If you’re booking a flight, that’s where prices are checked, itineraries are booked, and credit cards are charged. A backend can be very simple or very complicated.

A typical setup for a backend is a web server, an application and a database. The web server delivers a note to the application that you’d like to see all of the flights to Chicago. The application looks up the flights in the database, puts together a web page that lists them, and sends that web page back to your computer through the web server. That’s all the backend. Once your computer gets a hold of it, it’s the frontend.

For technologies used in the backend, anything goes. If a database stores your name or flight info, it might be MySQL, MongoDB, PostgreSQL, or many others. Web pages could be put together with Python, Ruby on Rails or PHP. The web server that sends those pages over to your computer might be Apache, Nginx or IIS. The list goes on and on!

Cocktail Party Fact

Because you don’t see the backend, programmers can swap out pieces of it without you ever knowing. For a while Twitter was powered by Ruby on Rails, but in 2011 switched over to Java. I’ll bet you didn’t notice!

This post was originally posted at Skillcrush.

Adda BirnirAbout the guest blogger: Adda Birnir is Co-Founder of Balance Media, a women-led client services and product development company based in New York, and Skillcrush, an online learning community for female creatives, thinkers and makers. Our goal is to create the next generation of digitally-savvy, creative females who can rule the web. Adda’s principal interests are digital media, progressive journalism, art and infographics. Check out her website here. Follow her on Twitter at @builtbybalance.