If you own a website, you have probably heard terms such as domain names, website hosting and DNS.
These terms are often used together and can sometimes sound complicated or technical.
In reality, the concepts themselves are relatively straightforward once they are broken down into simple terms.
Understanding the difference between a domain name, website hosting and DNS can help businesses make better decisions, avoid confusion and communicate more effectively with website developers, hosting companies and software providers.
Learn more about these concepts in simple terms article.
This article is part of our series explaining business technology in simple terms, helping organisations understand modern digital tools without technical jargon.
Websites Explained
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Imagine Your Website Is a Business Premises
One of the easiest ways to understand websites is to think of them like a business premises. In this example:
- Your domain name is your business address.
- Your website hosting is the building itself.
- Your DNS acts like a directory service, or sign posts that tells visitors where everything can be found.
Although all three work together, they each perform a different role.
What Is a Domain Name?
A domain name is the address people type into their browser to find your website.
Examples include:
- why-us.co.uk
- why-us.uk
- .com
- .org
A domain name does not actually contain your website. Instead, it acts as an easy-to-remember address that points people towards the correct location.
Continuing our business premises analogy, your domain name is simply your street address.
Without an address, people would struggle to find your business.
Most businesses register their domain names through a domain registrar, and ownership of the domain remains one of the most important digital assets a business can have.
What Is Website Hosting?
Before a website can be published online, it first needs to be designed, developed and stored on a hosting platform. Our article on Website Development Explained in Simple Terms explains the wider process of creating a business website.
Website hosting is the service that stores your website files and makes them available to visitors.
This includes:
- Website pages
- Images
- Documents
- Databases
- Emails (in some cases)
- Software that runs your website
If the domain name is your address, then website hosting is the building itself.
When someone visits your website, their browser connects to the hosting server to retrieve the information needed to display the website.
Different types of hosting are available, ranging from low-cost shared hosting to dedicated servers and cloud hosting platforms.
Most businesses simply need reliable hosting that keeps their website secure, backed up and available to visitors.
What Is DNS?
DNS stands for Domain Name System.
Although the name sounds technical, DNS performs a relatively simple job.
DNS acts like a directory service for your domain name.
When someone enters your website address into their browser, DNS tells the browser where the website, emails and other services can be found.
Without DNS, users would need to remember long strings of numbers rather than simple website addresses.
Continuing our business premises analogy, DNS is rather like the directory service or sign posts that tells people which building to visit and which department within the building they need to access.
Different Types of DNS Records
DNS uses different types of records to direct traffic to different services.
Most businesses will never need to create these records themselves, but understanding what they do can help when working with website developers, IT providers and software companies.
A Records
An A Record is one of the most common DNS records.
It tells internet browsers where your website hosting server is located by pointing your domain name to a specific IP address.
For many businesses, this is the record that makes their website visible online.
CNAME Records
A CNAME record creates an alias that points one address to another.
These are commonly used for subdomains such a portal.why-us.co.uk Rather than creating a completely separate destination, a CNAME record simply tells the system to look elsewhere.
MX Records
MX stands for Mail Exchange.
These records tell email systems where emails for your domain should be delivered.
For example, if your business uses Microsoft 365 or Google Workspace, MX records help ensure that incoming emails arrive at the correct email service provider.
TXT Records
TXT records are used to store additional information about your domain.
Common examples include:
- SPF records to help prevent email spoofing
- DKIM records to help verify email authenticity
- Domain verification records for software providers
- Security and authentication settings
Although these records are usually configured by technical providers, they play an important role in email security and domain ownership verification.
Read more of our business technology ‘Simple Terms’ explained articles:
Why Businesses Sometimes Get Confused
One of the most common sources of confusion is that domain names, hosting and email services do not always sit with the same supplier.
For example:
- Your domain name may be registered with one company.
- Your website hosting may be managed by another company.
- Your email service may be provided by Microsoft or Google.
- Your CRM system may require additional DNS records.
- Your customer portal may use a separate subdomain.
This is perfectly normal, but it means that understanding which company manages which service can become important when changes need to be made.
Who Should Own Your Domain Name?
As a general rule, businesses should ensure they either own, or have access to control their own domain name.
While website developers and IT providers may help manage domains, the business itself should ideally retain ownership and access wherever possible.
Your domain name is often one of your most important business assets because it controls access to your website, emails and many other online services.
Website Hosting, Domains and DNS analogy reminder
Although terms such as domains, hosting and DNS can initially sound complicated, they each perform a relatively simple role.
If you would like to understand more about how domain names operate within the UK internet infrastructure, the UK’s official domain registry, Nominet, provides additional information about domain names and how they work.
As traditional search engines and AI search tools continue to evolve, ensuring your website infrastructure is reliable remains an important foundation for online visibility. Our article on AI Search Explained in Simple Terms explores how businesses are increasingly being discovered online.
As a reminder, your domain name is your address, your website hosting is where your website lives an your DNS tells people and systems where to find everything.
Understanding these concepts can help businesses make better decisions, communicate more effectively with suppliers and avoid many of the common problems that occur when managing websites and online services.
In simple terms, once you understand the role of each component, the internet becomes much less mysterious.
