Domains, Hosting & Going Live

Overview

Code without a URL is just files on your laptop. This chapter is the bridge from 'localhost' to 'a real address strangers can visit'. You'll understand domains, DNS records, hosting tiers, and how to ship a site without losing money or weekends.

What you'll learn

• How to pick a domain name that won't embarrass you in 2 years.
• The 6 DNS record types you'll actually use, with copy-paste examples.
• When to use static hosting, when to upgrade to a managed platform, and when (almost never) to run your own VPS.
• Why every site in 2026 should be HTTPS with a CDN — and how to get both for free.

Lessons in this chapter

All lessons are free and open — start anywhere, in any order.

1. 1

   What is a Domain Name (Really)?

   TLDs, subdomains, registrars — explained without the jargon hangover.

   111 min
2. 2

   DNS Records, Demystified

   A, CNAME, MX, TXT — the alphabet soup that points everything to everything.

   112 min
3. 3

   Hosting: Where Your Site Lives

   Static, serverless, VPS, managed — pick the right plate for the right meal.

   113 min
4. 4

   Common Mistakes & How to Avoid Them

   The 5 traps beginners fall into when working on domains, hosting & going live — and the fix for each.

   111 min
5. 5

   A Real-World Walkthrough

   A start-to-finish example of applying domains, hosting & going live to a real project you can copy.

   111 min
6. 6

   Mental Models That Actually Help

   The 3 mental models we keep coming back to when things get hard in domains, hosting & going live.

   111 min

Glossary

Key terms used throughout this chapter.

TLD

Top-Level Domain — the suffix like .com, .my, .ai.

Registrar

A company licensed to sell domain names (Cloudflare, Namecheap, Porkbun).

A record

DNS entry pointing a domain to an IPv4 address.

CNAME

DNS entry pointing a domain to another domain (used for Vercel, Netlify, etc.).

TTL

Time To Live — how long DNS resolvers cache a record before re-checking.

CDN

Content Delivery Network — geographically distributed cache that makes assets fast worldwide.

SSL/TLS

Encryption that turns http:// into https:// — free via Let's Encrypt.