Glossary

Key terms of web development, hosting, AI and SEO — explained in plain words.

AI agent

An AI-powered program that can carry out multi-step tasks on its own — writing and testing code, gathering data, integrating services. I use the most capable AI agents…

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API

A way for two programs to talk to each other and exchange information automatically.

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Backup

A saved copy of your website (files and database) that lets it be restored after a failure, hack or mistake. Regular backups are essential for a project that…

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Browser

The program you use to open and view websites, such as Chrome, Safari or Firefox.

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Caching

Storing ready-made copies of pages or data so they load instantly instead of being rebuilt every time. Proper caching is one of the biggest speed boosts for a…

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CDN

A Content Delivery Network — a set of servers around the world that deliver your site’s files from the location nearest to each visitor, making it load faster…

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CMS

A content management system — a program that lets you build and update a website through a simple screen, without writing code.

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Database

The organised store where a website keeps all its text and information, ready to be pulled up when needed.

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DNS

The internet’s address book that turns an easy website name into the number a computer needs to find it.

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Domain

The human-readable address of your website (for example, raf.am) that visitors type into the browser. It points to the server where your site is hosted.

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Firewall

A protective filter that checks incoming traffic and blocks anything that looks harmful before it reaches your site.

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Hosting

A service that stores your website’s files on a server and makes it available on the internet 24/7. The choice and tuning of hosting directly affect a site’s…

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Landing page

A single focused page built to lead a visitor toward one clear action, like leaving a request or buying.

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Malware

Harmful software made to damage a website, steal data or use it for bad purposes.

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Meta tags

Short hidden labels that tell search engines and social networks what a page is about.

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Plugin

A ready-made add-on that gives your website a new feature without building it from scratch.

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Redirect (301)

An automatic forward that sends visitors from an old web address to a new one, so no link leads to a dead end.

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Responsive design

A way of building a website so it automatically fits any screen — phone, tablet or computer.

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SEO

Search engine optimization — making a website easy for search engines to understand so it ranks higher and more people find it.

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Server

An always-on computer that stores websites and sends their pages to visitors on request.

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Sitemap

A list of all a website’s pages, prepared so search engines can find and understand every one of them.

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SSL certificate

A certificate that encrypts the connection between the visitor’s browser and your website (the padlock and https://). It protects data and is a ranking factor for search engines.

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Theme

A ready-made design that sets how your whole website looks, changeable without touching the content.

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Uptime

The share of time a website stays online and reachable, ideally as close to 100% as possible.

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Website migration

Moving a website from one hosting or address to another without losing anything or breaking it.

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Website traffic

The flow of visitors coming to a website — how many people visit and how often.

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WooCommerce

A free add-on that turns a WordPress website into a full online shop.

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WordPress

A free, open-source content management system (CMS) that powers over 40% of all websites. Flexible, extendable with plugins and themes, and the core platform I build most projects…

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