Hosting comes with its own vocabulary. Whether you’re buying your first VPS or just trying to make sense of a support article, here’s a plain-English glossary of the terms you’ll run into most often.
Apache
A free, open-source web server application maintained by the Apache Software Foundation. It handles the connection between your server and visitors’ browsers, sending files back and forth. Nginx is a common modern alternative, built to handle very high traffic more efficiently.
Autoresponder
A tool that automatically replies to incoming email — useful for out-of-office notices or automated support replies.
Backup
A copy of your files or data kept separately from the original, so you can restore everything if the original is lost, corrupted, or deleted.
Bandwidth
The amount of data that can be transferred between two points in a given time, usually measured in bits per second (or Mbit/s, Gbit/s, etc.).
Browser
The application (Chrome, Firefox, Safari, Edge) people use to view web pages, images, and video.
cPanel
A widely used graphical control panel for managing a Linux server — publishing sites, managing domains, organizing files, and creating email accounts without touching the command line.
DDoS (Distributed Denial of Service)
An attack that floods a server with fake traffic from many sources at once, exhausting its resources and knocking a website offline.
Dedicated Server
A physical server reserved entirely for one customer. Because you aren’t sharing resources with anyone else, performance is more predictable — ideal for high-traffic sites or workloads that need guaranteed capacity.
DKIM (DomainKeys Identified Mail)
An email authentication method that digitally signs outgoing mail so recipients can verify it really came from your domain and wasn’t altered in transit. Commonly used alongside SPF.
Domain Name
The human-readable address for a website (like kwikserver.com), which maps to the numeric IP address of the server hosting it.
DNS (Domain Name System)
The system that translates domain names into IP addresses, letting browsers find the right server for a given domain.
FTP (File Transfer Protocol)
A protocol for uploading and downloading files to and from a remote server, typically via a client like FileZilla.
HTML
The markup language used to structure web pages, usually paired with CSS for styling and JavaScript for interactivity.
HTTP
The protocol browsers and servers use to exchange data — pages, images, video — and the foundation of the web.
IMAP
An email protocol that lets a mail client (Outlook, Thunderbird, etc.) retrieve and sync messages stored on a mail server.
IP Address
A unique numeric identifier assigned to a device on a network. Domain names exist so people don’t have to remember these numbers directly.
JavaScript
A scripting language that runs in the visitor’s browser (client-side) to add interactivity to a page, as opposed to code that runs on the server.
Linux
A free, open-source, Unix-like operating system originally created by Linus Torvalds. It’s the dominant OS for servers because of its stability and reliability.
Mailing List
A list of email addresses used to send one message to many recipients at once — for announcements or ongoing discussions.
Managed Hosting
A hosting model where the provider handles configuration, updates, and general server administration for you. Shared hosting, reseller hosting, and managed VPS plans typically fall into this category and include cPanel access.
MySQL
A widely used relational database system, often paired with PHP to power applications like WordPress.
Open-Source Software
Software whose source code is freely available to view, modify, and redistribute.
PHP
A server-side scripting language used to generate dynamic web page content.
POP (Post Office Protocol)
An older email protocol for retrieving messages from a mail server, typically downloading them to a single device rather than syncing across devices like IMAP does.
Reseller Hosting
A hosting plan that lets its owner host websites on behalf of other people or businesses — a common way to start a small hosting business.
Unmanaged Hosting
The opposite of managed hosting: you’re responsible for configuration, updates, and administration yourself. KwikServer’s unmanaged VPS and dedicated plans fall here, and don’t include cPanel by default (though you can install it).
Shared Hosting
A hosting plan where your account shares server resources with other customers on the same machine — the most affordable way to get a site online.
SMTP (Simple Mail Transfer Protocol)
The standard protocol used to send email between servers.
Softaculous
An auto-installer available with cPanel that lets you install popular applications like WordPress in a few clicks.
Spam
Unsolicited bulk email. No filtering method catches 100% of it without occasionally flagging legitimate mail too.
SPF (Sender Policy Framework)
A DNS record that lists which mail servers are authorized to send email on behalf of a domain, helping prevent spoofing. Often paired with DKIM.
SSL (Secure Sockets Layer)
A protocol for encrypting communication between a server and a client, most visibly used to secure websites over HTTPS.
Top-Level Domain
The rightmost segment of a domain name — .com, .org, .net, .gov, and so on.
Virtual Private Server (VPS)
A virtual machine running on a physical server alongside other virtual machines, but functioning as its own independent computer with dedicated resources and (usually) root access. Cheaper than a dedicated server, with more control than shared hosting.
Webmail
Email you can access directly through a web browser, without installing a separate mail client.
WordPress
A popular open-source content management system built on PHP and MySQL/MariaDB, used to power everything from simple blogs to full business sites.