Dictionary

AI is when computers are programmed to do things that normally require human thinking — like understanding speech, recognizing faces, making recommendations, or having a conversation.

An API is a messenger that lets two programs talk to each other — one asks a question, the API delivers it, and brings back the answer.

An app is a tool on your phone or computer that does one specific thing for you — like messaging, taking photos, or checking the weather.

Authentication is how a system confirms your identity — proving you are really you before letting you in, usually with a password, fingerprint, or verification code.

The backend is the brain behind a website — it processes data, runs business logic, and handles everything you do not see but that makes the app actually work.

A backup is a safety copy of your files stored somewhere else, so if you lose the original, you can get it back.

Big Data is data so huge and complex that normal tools cannot handle it — companies use special technology to analyze it and discover valuable patterns.

A blockchain is a shared digital record book that nobody can secretly change — once something is written, it stays there permanently and everyone can verify it.

A cache is a shortcut — it saves copies of things you use often so they load instantly instead of being fetched from scratch every time.

A CDN places copies of your website on servers all around the world so users everywhere get fast load times — content is delivered from the server closest to them.

The cloud means renting computers and storage over the Internet instead of buying your own — you use what you need, when you need it, and pay as you go.

A CMS is a tool that lets anyone build and update a website without knowing how to code — like a website builder with a Word-like editor.

A conversion is when someone does exactly what you wanted them to do on your website — whether that is buying, signing up, downloading, or clicking a specific button.

A CRM is a digital address book on steroids — it stores everything about your customers (contacts, purchases, conversations) in one place so your whole team can see it.

CSS is the language that controls how a website looks — the colors, fonts, spacing, layout, and animations that make a page visually appealing.

A dashboard is a visual summary screen that shows you the most important numbers, charts, and status updates in one place — like the instrument panel in your car, but for data.

Data is information — any fact, number, word, image, or detail that can be recorded and stored by a computer.

Data analytics is turning raw numbers and information into clear answers that help people and businesses make better decisions.

Data visualization turns numbers and data into pictures — charts, graphs, and dashboards — so people can quickly see what the data means.

A database is like a super-organized digital filing cabinet where apps and websites store all their information — users, products, messages, orders — so they can find anything instantly.

For developers, a database is a powerful tool they must carefully design, query, and maintain — choosing the right type of database and writing efficient queries to keep apps fast and reliable.

A domain is the name of a website — like "youtube.com" — that you type in your browser instead of having to remember a long string of numbers.

E-commerce is buying and selling things online — any transaction where you pay for something through the Internet instead of in a physical store.

Encryption scrambles your data into a secret code that only the right person can unscramble — so nobody else can read it, even if they intercept it.

A firewall is a digital security guard that decides what Internet traffic is allowed in and out of your computer or network — blocking anything suspicious.

A framework is like a franchise kit for developers — the base is already built, you just add your own flavor on top.

The frontend is everything you can see and touch on a website — the visual design, buttons, text, and animations that run in your browser.

A funnel is the step-by-step path from "someone discovers your business" to "they become a paying customer." Many start the journey, but only some finish it.

Hardware is everything you can physically touch on a computer or device — the screen, keyboard, cables, and the chips inside.

Hosting is renting space on a powerful computer (server) that is always connected to the Internet, so your website is available to everyone at all times.

HTML is the language that defines the structure and content of every webpage — it tells the browser what to show: text, images, links, and more.

It is a giant highway system that connects computers all over the world so they can talk to each other and share things.

IoT is when everyday objects — thermostats, watches, cameras, appliances — are connected to the Internet so they can collect data, be controlled remotely, and work smarter.

A landing page is a single web page with one job: convince you to do one specific thing — like sign up, buy, or download.

A lead is someone who is interested in what you sell and gave you their contact info — they are a potential customer you can follow up with.

An LLM is an AI that learned language by reading an enormous amount of text, and can now write, answer questions, and hold conversations almost like a human.

Machine Learning is when you give a computer lots of examples and it learns the patterns by itself — instead of a human writing all the rules manually.

Phishing is when scammers send fake emails, texts, or websites pretending to be someone you trust — to trick you into giving them your passwords or personal information.

SEO is the art of making your website show up first when people search for something on Google. The higher you appear, the more people visit your site.

A server is a computer that is always on and always connected to the Internet, waiting to send you the information you request — like websites, videos, or files.

If the hardware is the body of a computer, the software is the brain — it tells the machine what to do and how to do it.

A spreadsheet is a digital table with rows and columns where you organize data, do calculations, and create charts — like Excel or Google Sheets.

SSR means the server prepares the full web page before sending it to your browser — so the page loads faster and search engines can find it more easily.

UX is how easy and pleasant an app feels to use; UI is how it looks. Good UX/UI means users can find what they need without thinking about it.

A VPN is a private, encrypted tunnel for your Internet connection — it hides what you do online and makes it look like you are browsing from a different location.