Web hosting is full of jargon — bandwidth, SSL, DNS, cPanel, CDN — and it can make getting started feel harder than it needs to be. This glossary explains more than fifty of the most common hosting terms in plain English, grouped so you can find what you need quickly.

Keep it open as a reference while you shop for hosting or set up your first site. Whenever a plan or a tutorial throws a term at you, you will be able to look it up here and know exactly what it means.

Hosting basics

• Web hosting: a service that stores your website’s files on a server and makes them available on the internet.
• Server: a powerful computer that stores websites and delivers them to visitors around the clock.
• Domain name: your website’s address, like yoursite.com, that people type to reach you.
• Website files: the pages, images, code, and content that make up your site.
• Database: where a dynamic site (like WordPress) stores its posts, settings, and data.
• Web host: the company that provides your hosting service.
• Data centre: the secure facility where servers are physically housed.

Types of hosting

• Shared hosting: your site shares one server with many others; the cheapest option.
• VPS hosting: a virtual private server giving you a reserved slice of a machine.
• Cloud hosting: your site runs across a network of servers for reliability and scale.
• Dedicated hosting: an entire physical server just for your site.
• Managed WordPress hosting: hosting tuned and maintained specifically for WordPress.
• Reseller hosting: buying hosting in bulk to sell on to your own clients.
• Managed vs unmanaged: whether the host handles server upkeep (managed) or you do (unmanaged).

Performance and specs

• Bandwidth: the amount of data your site can send to visitors over a period.
• Storage: the disk space for your files and database, measured in gigabytes.
• SSD: solid-state storage, far faster than old spinning hard drives.
• NVMe: a newer, even faster type of SSD storage.
• RAM: memory that helps your site handle tasks and visitors at once.
• CPU: processing power for running your site’s scripts and queries.
• Uptime: the percentage of time your site is online and reachable.
• Caching: storing ready-made copies of pages so they load faster.
• CDN: a content delivery network that serves your files from locations near each visitor.
• Latency: the delay before data transfer begins; lower is better.

Domains and DNS

• DNS: the internet’s address book, translating domain names into server addresses.
• Nameserver: the servers that hold your domain’s DNS records.
• A record: a DNS entry pointing your domain to a server’s IP address.
• CNAME: a DNS entry that points one domain name to another.
• Subdomain: a section of your site with its own prefix, like blog.yoursite.com.
• Domain registrar: the company you buy and register a domain name through.
• TLD: the ending of a domain, such as .com, .org, or .net.
• Domain propagation: the time it takes for DNS changes to spread across the internet.

Security terms

• SSL certificate: encrypts data between your site and visitors, enabling https.
• HTTPS: the secure, encrypted version of HTTP shown by the browser padlock.
• Firewall (WAF): a web application firewall that blocks malicious traffic.
• DDoS attack: an attack that floods a server to knock it offline.
• Malware: malicious software that can infect and damage a website.
• Two-factor authentication (2FA): a second login step for extra account security.
• Backup: a saved copy of your site you can restore if something goes wrong.

Management and email

• Control panel: the dashboard for managing your hosting account.
• cPanel: the most widely used hosting control panel.
• hPanel: Hostinger’s own beginner-friendly control panel.
• FTP: a method for uploading and transferring files to your server.
• One-click installer: a tool to install WordPress and other software instantly.
• Staging site: a safe copy of your site for testing changes before they go live.
• Email hosting: professional email at your own domain, like you@yoursite.com.
• Migration: the process of moving a website from one host to another.

Advanced terms worth knowing

• Root access: full administrative control over a server, offered on VPS and dedicated plans.
• Load balancing: spreading traffic across multiple servers to keep a site fast and stable.
• Cron job: a scheduled task that runs automatically on the server at set times.
• .htaccess: a configuration file that controls server behaviour like redirects and access rules.
• Redirect: sending visitors from one URL to another, such as a 301 permanent redirect.
• 404 error: the ‘page not found’ message shown when a URL does not exist.
• PHP: the programming language WordPress and many websites are built on.
• Resource limits: the caps a plan sets on CPU, memory, and processes you can use.
• Hotlinking: when another site embeds your images directly, using your bandwidth.
• Bandwidth throttling: deliberately slowing data transfer once a limit is reached.
• Uptime monitoring: a tool that checks your site regularly and alerts you if it goes down.
• SLA: a service level agreement, the host’s formal promise of uptime and support.

Website and content terms

• CMS: a content management system, like WordPress, for building and running a site.
• WordPress: the world’s most popular CMS, powering a huge share of websites.
• Theme: a design template that controls how your website looks.
• Plugin: an add-on that extends what your website can do.
• Website builder: a drag-and-drop tool for creating a site without code.
• IP address: the numerical address that identifies a server on the internet.
• Dedicated IP: an IP address used only by your site, rather than shared.
• SSH: a secure way for advanced users to access a server via the command line.

Billing and plans

• Introductory rate: the low price for your first term, before renewal.
• Renewal rate: the standard price you pay when your plan renews — always check it.
• Billing cycle: how often you pay, such as monthly, yearly, or multi-year.
• Money-back guarantee: a window in which you can get a refund if unsatisfied.
• Add-on: an optional paid extra, like a dedicated IP or premium security.
• Fair-use policy: the practical limits behind ‘unlimited’ storage or bandwidth.
• Overage: extra charges for exceeding a plan’s resource limits.

FAQs

What is web hosting in simple terms?

Web hosting is a service that stores your website’s files on a server and makes them available on the internet, so anyone can visit your site in a browser. Without hosting, a website has nowhere to live and cannot be seen online.

What is the difference between a domain and hosting?

A domain is your website’s address, like yoursite.com, while hosting is where your files actually live. You need both: the domain points visitors to the host, and the host delivers your pages. They are separate services, though many providers sell them together.

What is bandwidth in web hosting?

Bandwidth is the amount of data your website can send to visitors over a period, usually a month. Every page view, image, and download counts toward it. Most small sites use far less than plans provide, so it rarely becomes a limit.

What does SSL mean?

SSL is a certificate that encrypts the data passing between your site and its visitors, enabling the secure https version of your site and the browser padlock. It protects passwords and form data, and good hosts provide it free.

What is DNS?

DNS, the Domain Name System, is the internet’s address book. It translates a domain name people type, like yoursite.com, into the numerical address of the server where your site is hosted, so browsers know where to find your pages.

Do I need to know all these terms to start a website?

No. Understanding the basics and the hosting types is enough to choose a plan and launch a site. The rest of this glossary is a reference you can dip into whenever a specific term comes up during setup or while comparing plans.

The bottom line

Hosting jargon is far less intimidating once each term is spelled out plainly. The words in this glossary describe just a handful of underlying ideas: where your site lives, how fast and reliable it is, how visitors reach it, how it stays secure, and how you manage and pay for it.

You do not need to master all fifty-plus terms to get started — the basics and hosting types are plenty for launching a first site. Bookmark this page as your reference, and look terms up as you go. Understanding the language is the first step to choosing hosting with confidence.

When you are ready, you can start with Hostinger and use code PROTIPS for the reader discount. Keep this glossary handy, and hosting jargon will never trip you up again.