ACY Partner Indonesia Blog

Web Fundamentals/Fundamentals

What Is the Web?

A beginner-friendly guide to the World Wide Web: what a website is, what a browser actually does, and why the whole thing is really just pages connected by links.

Web Fundamentals/Fundamentals

Internet vs the Web on a dark blue cover with the chip internet contains web

Internet vs the Web: What's the Difference?

People use internet and web as if they mean the same thing, but they don't. Learn the simple distinction in plain language, with a roads-and-traffic analogy anyone can follow.

Sep 15, 20268 min read

Diagram of a web request travelling from a browser to a server and back

Web Fundamentals/Fundamentals

How the Web Works: From Click to Page

A plain-language walkthrough of what really happens when you visit a website — from typing an address to the browser drawing the page on your screen.

HTTP

Web Fundamentals/HTTP

What Is HTTP? The Language of the Web Explained for Beginners

HTTP is how your browser and web servers talk to each other. Learn what a request and response look like, why it's human-readable, and how HTTPS keeps it safe.

Web Fundamentals/HTTP

HTTP Requests and Responses

Every page you load is a conversation: your browser asks, a server answers. Learn the anatomy of an HTTP request and response, with a real raw example you can read line by line.

Web Fundamentals/HTTP

HTTP Methods: GET, POST, and Friends

A beginner-friendly tour of HTTP methods. Learn what GET, POST, PUT, PATCH, DELETE, HEAD, and OPTIONS really do, plus what safe and idempotent actually mean.

DNS & Domains

Web Fundamentals/DNS & Domains

What Is a Domain Name?

A domain name is the human-friendly address you type to reach a website. Learn what it really is, why we use names instead of numbers, and the parts that make it up.

Sep 15, 20267 min read

Web Fundamentals/DNS & Domains

What Is DNS? The Web's Phonebook Explained

DNS turns a domain name like example.com into the IP address of a server, so your browser knows where to send its request. Here is what DNS is and why it exists, in plain language.

Sep 15, 20267 min read

Web Fundamentals/DNS & Domains

How DNS Works: The Lookup Journey

Follow a domain name from the moment you press Enter to the IP address that comes back. We trace every cache and server in the DNS lookup chain, step by step, in plain language.

Browsers

Web Fundamentals/Browsers

What Is a Web Browser?

A plain-language guide to what a web browser really is: the program that fetches web resources and turns them into the pages you see, tab by tab, click by click.

Web Fundamentals/Browsers

Dark blue cover with the title How Browsers Work and a parse to layout to paint code chip

How Browsers Work: An Overview

A beginner-friendly tour of what your browser does between typing a URL and seeing a page: networking, parsing, the render tree, layout, paint, compositing, and the JavaScript engine.

Web Fundamentals/Browsers

The Browser Rendering Pipeline

How a browser turns your HTML, CSS, and JavaScript into actual pixels on screen — DOM, CSSOM, render tree, layout, paint, and compositing, explained step by step for beginners.

Hosting & Delivery

Web Fundamentals/Hosting & Delivery

Illustration showing files turning into a live website, titled What Is Web Hosting?

What Is Web Hosting? A Beginner's Guide to Putting a Site Online

Web hosting means renting space on an always-on server so your website is reachable on the internet 24/7. Here is what a host actually does and why your laptop cannot do its job.

Web Fundamentals/Hosting & Delivery

Types of Hosting Compared cover with shared, VPS, and cloud labels

Types of Hosting Compared: Shared, VPS, Dedicated, Cloud, and Static

A beginner-friendly tour of web hosting options. Compare shared, VPS, dedicated, cloud, and static hosting by cost, control, scaling, and effort, with a clear table and tips on when each one fits.

Sep 15, 20268 min read

Diagram-style cover showing origin to edge to user, titled What Is a CDN?

Web Fundamentals/Hosting & Delivery

What Is a CDN? How Content Gets Closer to Your Users

A beginner-friendly guide to CDNs (Content Delivery Networks): why distance slows the web, what gets cached at the edge, and how a CDN speeds up your site while protecting your origin server.

Frontend

Fundamentals

Frontend/Fundamentals

What Is Frontend Development?

A beginner-friendly guide to frontend development: the part of a website you actually see and click. Learn how HTML, CSS, and JavaScript work together, and how the frontend differs from the backend.

Cover illustration for What Frontend Developers Do

Frontend/Fundamentals

What Frontend Developers Do: A Beginner's Guide to the Role

A clear, beginner-friendly look at what frontend developers actually do every day: turning designs into working interfaces, building reusable UI, and caring about responsiveness, accessibility, and speed.

Sep 20, 202610 min read

Frontend/Fundamentals

The Frontend Developer Toolkit

A friendly tour of the everyday tools a frontend developer relies on — code editor, browser and DevTools, terminal, version control, package managers, and a dev server — and what each one is actually for.

Sep 20, 202610 min read

HTML

Frontend/HTML

What Is HTML? A Beginner's Guide to the Building Blocks of the Web

HTML is what every web page is made of. Here's what it actually is, how its tags and elements work, and how to write your very first page — explained simply, from zero.

Jun 29, 202612 min read

The basic structure of an HTML document — head and body

Frontend/HTML

The Basic Structure of an HTML Document, Explained

Every HTML page sits on the same skeleton: doctype, html, head, and body. Here's what each part does and why it's there — so you can set up any page properly from scratch.

Jun 30, 20268 min read

Frontend/HTML

HTML Text Elements: Headings, Paragraphs, Lists, and Emphasis

Most of a web page is text. Here are the HTML elements that structure it — headings, paragraphs, lists, line breaks, and the tags that add emphasis — with clear examples of when to use each.

Jul 1, 20268 min read

CSS

What Is CSS — the language that styles the web

Frontend/CSS

What Is CSS? A Beginner's Guide to Styling the Web

CSS is what makes web pages look good. Learn what it is, how rules and selectors work, the three ways to add it to a page, and write your first styles — explained simply, from zero.

Jul 7, 20268 min read

CSS selectors — class, id, and pseudo-class selectors

Frontend/CSS

CSS Selectors: How to Target the Elements You Want to Style

Selectors are how CSS picks which elements a rule applies to. Learn element, class, and id selectors, how to combine them, pseudo-classes like :hover, and how the cascade decides which rule wins.

Jul 8, 20267 min read

CSS colors and backgrounds — hex, rgb, and gradients

Frontend/CSS

CSS Colors and Backgrounds: Filling the Web With Color

Color is one of the most impactful parts of CSS. Learn the ways to specify color — names, hex, RGB, HSL — plus transparency, background colors, gradients, and background images.

Jul 9, 20267 min read

JavaScript

Frontend/JavaScript

What Is JavaScript? A Beginner's Guide to the Web's Programming Language

JavaScript is what makes web pages interactive. Learn what it is, how it differs from HTML and CSS, how to add it to a page, and write your first lines of real code — explained simply, from zero.

Jul 15, 20267 min read

JavaScript variables and data types — let, const, strings, numbers

Frontend/JavaScript

JavaScript Variables and Data Types Explained

Variables store information in your code, and data types describe what kind of information it is. Learn let, const, and var, plus strings, numbers, booleans, and the other core JavaScript types.

Jul 16, 20267 min read

JavaScript operators and conditionals — if, comparison, and logic

Frontend/JavaScript

JavaScript Operators and Conditionals: Making Decisions in Code

Operators let you calculate and compare values; conditionals let your code choose what to do. Learn arithmetic and comparison operators, if/else if/else, logical operators, and the ternary shortcut.

Jul 17, 20266 min read

TypeScript

Frontend/TypeScript

What Is TypeScript? JavaScript With a Type System, Explained

A beginner-friendly guide to TypeScript: what it is, why it exists, how it adds optional static types on top of JavaScript, and how those types catch bugs before your code ever runs.

Why Use TypeScript? cover with a TypeScript code chip

Frontend/TypeScript

Why Use TypeScript? The Real Benefits for Everyday Code

A beginner-friendly look at what TypeScript actually buys you: fewer runtime bugs, self-documenting code, smarter autocomplete, and safer refactors — plus an honest take on its costs.

TypeScript vs JavaScript cover with a .ts to .js code chip

Frontend/TypeScript

TypeScript vs JavaScript: What's the Difference?

TypeScript is JavaScript with static types and a compile step. Learn what they share, what TS adds, why .ts turns into .js, and which one to reach for as a beginner.

Server

Fundamentals

What is a server — a computer that serves others over a network

Server/Fundamentals

What Is a Server? A Beginner's Guide to the Machines That Run the Web

A server is just a computer that does a job for other computers. Learn what a server really is, how it differs from your laptop, the kinds of servers you'll meet, and why everything online depends on them — explained simply, from zero.

Sep 1, 20266 min read

Server vs client — the request and response relationship that powers the web

Server/Fundamentals

Server vs Client: The Two Sides of Every Online Interaction

Almost everything online is a conversation between a server and a client. Learn exactly what each side does, how they differ, where your code actually runs, and why knowing which is which saves you from a whole class of confusing bugs.

Sep 2, 202610 min read

Types of servers — web, application, database, file, mail, and more, each doing a different job

Server/Fundamentals

Types of Servers Explained: Web, App, Database, and the Rest

Servers are named after the job they do, not the box they run on. Walk through the main types of servers — web, application, database, file, mail, DNS, proxy, and more — with plain explanations of what each one is for and how they fit together.

Sep 3, 202610 min read

Linux

Server/Linux

Why Linux for Servers? The Reasons It Quietly Runs Most of the Internet

Sooner or later, working with servers means working with Linux. Learn why Linux dominates the server world — its stability, low cost, control, security model, and remote-friendly design — and why getting comfortable with it pays off for years, explained from zero.

Sep 13, 202611 min read

Linux distributions — the same kernel packaged in many different ways

Server/Linux

Linux Distributions Explained: Why There Are So Many Linuxes and Which One a Server Wants

A Linux distribution is the kernel plus everything packaged around it. Learn what a distro actually is, why hundreds exist, how the major families differ, and how to pick a sensible one for a server — explained from zero, vendor-neutral.

Sep 14, 20269 min read

The command line — a shell prompt where you type commands to control a server

Server/Linux

The Command Line: How to Talk to a Server Without a Mouse

Servers have no screen and no mouse — you control them by typing. Learn what the command line really is, how the shell reads what you type, the anatomy of a command, and the handful of habits that turn a blinking cursor into the most powerful tool you own, explained from zero.

Sep 15, 202611 min read

Web Servers

Server/Web Servers

What Is a Web Server? The Software That Hands Out Web Pages

A web server is the piece of software that listens for browser requests and sends back web pages. Learn what a web server actually does, how it differs from the machine it runs on, what HTTP has to do with it, and where it sits in the journey from URL to page — explained from zero.

Sep 27, 20269 min read

How web servers work — a request flows in, a response flows back out

Server/Web Servers

How Web Servers Work: From a URL in the Browser to a Page on Your Screen

Type a URL, hit Enter, and a page appears. But what actually happens inside the web server during those few hundred milliseconds? Walk through the full request lifecycle — listening, parsing, routing, responding — step by step, from zero.

Sep 28, 202612 min read

Static vs dynamic content — a server reading a file versus building a page on the fly

Server/Web Servers

Static vs Dynamic Content: Two Ways a Server Answers a Request

When a browser asks for a page, the server either hands over a file it already had, or builds a fresh page on the spot. That single difference — static vs dynamic content — shapes speed, cost, and how your whole site is built. Here's the full picture, from zero.

Sep 29, 20269 min read

Networking

What is a network — computers connected so they can send messages to each other

Server/Networking

What Is a Network? How Computers Talk to Each Other, Explained Simply

A network is just a group of computers that can send messages to each other. Learn what a network really is, the pieces that make one work, how data actually moves across it, the common types you'll meet, and why every server depends on one — explained from zero.

Oct 5, 20269 min read

How the internet works — a request traveling across routers from client to server and back

Server/Networking

How the Internet Works: From a Click to a Web Page, Step by Step

What actually happens between typing a web address and seeing the page load? Follow a single request across the real internet — DNS, IP addresses, routers, packets, and the round trip back — explained plainly, from zero.

Oct 6, 20269 min read

TCP/IP basics — the layered protocol stack that moves data across the internet

Server/Networking

TCP/IP Basics: The Rules That Move Every Packet on the Internet

TCP/IP is the set of rules that lets any two computers on Earth exchange data reliably. Learn what TCP and IP each do, how the layered model works, the difference between TCP and UDP, and how a single request actually travels — explained from zero.

Oct 7, 202612 min read

Containers

What is a container — an app packaged with everything it needs, isolated on a shared host

Server/Containers

What Is a Container? The Box That Made Modern Software Portable

A container packs your app together with everything it needs to run, so it behaves the same on every machine. Learn what a container really is, how it differs from just installing software, what's actually inside one, and why containers changed how software ships — explained from zero.

Oct 15, 20269 min read

Containers vs virtual machines — sharing a kernel versus emulating a whole machine

Server/Containers

Containers vs Virtual Machines: What's Actually Different

Containers and virtual machines both let one physical server run many isolated workloads, but they solve the problem in completely different ways. Learn how each one works, where the line is drawn, what they trade off, and when to reach for which — from the ground up.

Oct 16, 202610 min read

Why use containers — package an app with everything it needs and run it anywhere

Server/Containers

Why Use Containers? The Real Problems They Solve

Containers aren't hype — they fix concrete, painful problems: 'it works on my machine,' messy dependencies, slow onboarding, and fragile deployments. Here's what containers actually buy you, when they're worth it, and when they're overkill.

Oct 17, 20269 min read

Deployment

Server/Deployment

What Is Deployment? Getting Your Code From Your Laptop to the World

Deployment is the moment your code stops running only on your machine and starts running where real people can reach it. Learn what deployment actually means, the steps it involves, why it's trickier than it sounds, and how the modern automated version works — explained from zero.

Oct 23, 202610 min read

Deployment environments — code flowing from development through staging to production

Server/Deployment

Deployment Environments Explained: Dev, Staging, and Production

Code rarely jumps straight from your laptop to real users. It passes through environments — development, staging, production, and friends. Learn what each one is for, why teams keep them separate, and how the same app behaves differently in each.

Oct 24, 202610 min read

How deployment works — code moving through build, transfer, switch, and verify stages

Server/Deployment

How Deployment Works: The Steps That Take Code From Build to Live

Deployment isn't one magic button — it's a sequence of steps that turns your source code into a running app on a server. Learn the universal stages (build, transfer, install, migrate, switch, verify), what each one does, and how the modern automated pipeline runs them for you.

Oct 25, 202612 min read

Server Security