What Is Web Development? A Beginner’s Guide

What is web development? It is the work of building and maintaining websites and web applications, from a single page of text to a busy online shop or a social network. It covers the code you see in your browser and the code on servers that you never see.

This guide explains the basics in plain English: how the web works, the difference between front-end and back-end, the main types of development, the skills and tools to learn, and where to start.

What is web development?

Web development is the technical side of making a website. A developer turns designs and requirements into something that runs in a browser: pages that load, forms that send, shops that take payments, dashboards that update. Most people equate it with writing code, and code is the core of it. But the job also includes setting up servers, working with databases, connecting other services, testing, and fixing problems after launch.

Web design and web development are related but different. Design decides how a site looks and how people use it. Development makes it work. Many projects need both, and many people learn a bit of each. If design interests you more, start with our guide to web design principles.

How the web works: the basics

Websites, servers and browsers

A website is a set of files stored on a server, which is a computer that is always on and connected to the internet. Servers around the world are linked together to form the internet. When you visit a site, your browser, such as Chrome, Firefox, Safari or Edge, asks the server for the files and displays them. The company that stores your files is your web host. See our guide to web hosting for WordPress if you are choosing one.

IP addresses and domain names

Every device on the internet has an IP address, a string of numbers that identifies it. Servers have them too. People do not want to remember numbers, so we use domain names such as inkyy.com. The Domain Name System, or DNS, is the directory that translates a domain name into the right IP address. MDN has a short explanation of DNS.

HTTP and HTTPS

HTTP, the HyperText Transfer Protocol, is the set of rules browsers and servers use to talk to each other. Your browser sends a request, and the server sends back a response. HTTPS is the secure version, which encrypts that conversation so others cannot read or change it. Today every site should use HTTPS. For a friendly overview of the whole journey, read MDN’s guide to how the web works.

Front-end, back-end and full-stack

Front-end development

The front-end is everything the visitor sees and uses in the browser: layout, text, images, menus, animations and forms. Three languages make it work. HTML gives the page its structure, CSS controls how it looks, and JavaScript adds behaviour such as menus that open and videos that play. Many developers also use a framework such as React or Vue to build larger interfaces. Browsers run HTML, CSS and JavaScript natively, which is why those three are the foundation of every front-end career.

Back-end development

The back-end is the part you never see. It runs on a server, stores data in a database, handles logins, processes orders and sends information to the front-end when it asks. Unlike the front-end, back-end code can be written in many languages, including PHP, Python, JavaScript (with Node.js), Ruby, Java, C# and Go. WordPress, which powers a large share of the web, is built mostly in PHP.

Full-stack development

A full-stack developer works on both sides and can build a feature from the database to the button. Most developers specialise first, then widen their skills over time. Being full-stack does not mean being an expert at everything, but it does mean understanding how the pieces connect. CareerFoundry has a useful explanation of what a full-stack developer does.

Other types of development

The word “development” covers a wider field than websites. These branches often overlap and share languages and tools:

• CMS and WordPress development: building themes, plugins and custom features on content management systems. See our guide to the perfect UI in WordPress.
• E-commerce development: online shops on platforms such as WooCommerce and Shopify, including payments and stock.
• Mobile development: apps for phones and tablets, built natively or with cross-platform tools. They work differently from websites and need their own skills.
• Game development: video games for PC, consoles and phones, often in specialist engines.
• Embedded development: software for devices that are not ordinary computers, such as smart appliances, wearables and other connected hardware.
• Security work: protecting sites from attacks, for example through updates, safe code and regular checks such as a WordPress security audit.

Strictly speaking, mobile, game and embedded work is software development rather than web development, but beginners meet all of them as they explore the field.

Skills and tools to learn first

Anyone can become a developer. You do not need a computer science degree, but you do need patience and a sensible order. Do not skip steps, because each skill builds on the last.

1. How websites and the internet work: servers, browsers, domains and HTTP, as described above.
2. HTML and CSS: structure and style. MDN’s Learn web development pathway is a free place to start.
3. JavaScript: the language of the browser. Learn the basics before any framework.
4. Git and GitHub: version control, so you can track changes, undo mistakes and work with others.
5. A front-end framework or a back-end language: pick one direction, such as React or PHP, and go deep.
6. Databases and APIs: how data is stored and shared between systems.
7. Quality basics: accessibility, performance and security. Good code is code that works for every visitor and keeps their data safe.

For a guided order of topics, the front-end roadmap on roadmap.sh is a handy checklist, and The Odin Project offers a free, project-based course.

How to get started

1. Pick a small goal, such as building your own one-page site.
2. Learn HTML and CSS by building it, not only by reading about it.
3. Add JavaScript for one useful feature, such as a menu or a contact form.
4. Put the project on GitHub and host it online.
5. Build two or three more projects, each a little harder.
6. Share your work, ask for feedback and keep improving.

Developers who understand design make better sites, and developers who care about search visibility build better ones still. Our tips on web design for SEO are a good next read, and the web design process shows where development fits in a real project. If you are leaning towards the design side, read how to become a web designer too.

Frequently asked questions

What does a web developer do?

A web developer builds and maintains websites and web apps. Depending on the role, that can mean writing front-end code, building server logic and databases, setting up hosting, fixing bugs and keeping sites fast and secure.

Is web development hard to learn?

It is a lot to learn, but each step is manageable. Most beginners can build a simple site within a few weeks of regular practice. Getting comfortable with JavaScript and back-end ideas takes longer.

What is the difference between web design and web development?

Web design focuses on how a site looks and how people use it. Web development focuses on building it with code so it works. Designers use tools like Figma, while developers write HTML, CSS, JavaScript and server code.

Do I need a degree to be a web developer?

No. Employers and clients mostly look at what you can build. A portfolio of working projects, plus a track record on GitHub, often counts for more than a certificate.

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