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Back End Development

The back end comprises three parts: the server, your database, any APIs, and a back-end web application, software written via server-side languages. The server is a powerful computer that runs the back-end software, the database houses your site’s data, and the software communicates between the two. For example, if a user is updating a profile on a networking site, the server-side scripts will gather the information the user enters, the application will process it on the server, then interact with the database to update that information there.

Server-side scripts are used by back-end web developers to build the back-end software of a website—the mechanics we don’t see, but that make a site’s usability and functionality possible.These languages create the communication channel between user, server, and database. Anything that isn’t explicitly written into the text markup of a site is front-end or back-end software. Any data that a user requests in the browser (e.g., the fields in drop-down menus, photos, or user profiles) is delivered via server-side scripts, which create a channel between server and end user that requests, edits, and deletes things in the database. In the browser, front-end scripts make that information available to the user.

Architecture For Backend Development

With fewer lines of code, the Python programming language is fast, making it ideal for getting things to market quickly. The emphasis is on readability and simplicity, which makes it great for beginners. It’s the oldest of the scripting languages, is powerful, and works well in object-oriented designs. Python-powered sites: YouTube, Google, The Washington Post

A subset of the C language, Java comes with a huge ecosystem of add-on software components. At its core, Java is a variation of C++ with an easier learning curve, plus, it’s platform independent thanks to the Java Virtual Machine. "Compile once, run anywhere" is its motto—and it’s excellent for enterprise-level applications, high-traffic sites, and Android apps. Java sites: Twitter, Verizon, AT&T, Salesforce

The language of Microsoft’s .NET Framework—the most popular framework on the web—C# combines productivity and versatility by blending the best aspects of the C and C++ languages. It’s excellent for developing Windows applications, and can be used to build iOS, Android mobile apps with the help of a cross-platform technology like Xamarin.

The most popular server-side language on the web, PHP is designed to pull and edit information in the database. It’s most commonly bundled with databases written in the SQL language. PHP was designed strictly for the web and remains one of the most widely used languages around. It’s easy to install and deploy, is staying competitive with lots of modern frameworks, and is the foundation for a number of content-management systems. PHP-powered sites: WordPress, Wikipedia, Facebook

If you’re expecting complicated logic on the database side of your site, the Ruby programming language is an excellent option. Unlike Python, Ruby is equal parts simplicity and complexity, pairing simple code with more flexibility and extra tools. Ruby bundles the back end with database functionality that PHP and SQL can offer as a pair—it’s great for startups, easy maintenance, and high-traffic demands. It requires developers to use the Ruby on Rails framework, which has vast libraries of code to streamline back-end development. Ruby-powered sites: Hulu, Twitter (originally), Living Social, Basecamp

Great for complex applications also built on the .NET Framework, the C++ programming language is a difficult but high-powered language that works well for data-heavy sites. Speed is central to C++, and it runs well alongside other languages like Java and Python.