Web hosting is the service that allows individuals and organizations to publish websites or web applications on the internet. A web host provides the server infrastructure, storage, network connectivity, and services required to make a website accessible via a domain name (for example, www.example.com).
This Knowledge Base article explains what web hosting is, how it works technically, types of web hosting, real-world use cases, step-by-step deployment examples, common issues, security considerations, and best practices.
At a technical level, web hosting means:
Storing website files (HTML, CSS, images, scripts, databases) on a server connected to the internet, and serving those files to users’ browsers over HTTP/HTTPS.
When a user enters a website URL:
DNS resolves the domain name to an IP address
The browser sends a request to the hosting server
The server processes the request
The server returns the website content to the browser
Software that handles HTTP/HTTPS requests.
Examples: Apache, Nginx, IIS
Physical server or virtual machine
CPU, RAM, storage, network interfaces
Stores website files and databases
HDD or SSD (SSD preferred for performance)
Public IP address
Internet bandwidth
Firewall and routing
Maps human-readable domain names to IP addresses
User Browser ↓ DNS Lookup (Domain → IP) ↓ Web Server (HTTP/HTTPS Request) ↓ Application Logic (PHP / Python / Node.js) ↓ Database (if required) ↓ Web Server Response ↓ User Browser
Multiple websites are hosted on one server, sharing CPU, RAM, and storage.
Lowest cost
Limited control
Shared resources
Small business websites
Personal blogs
Static informational sites
Performance depends on other websites
Limited customization
Not suitable for high traffic
A single physical server is divided into multiple virtual servers, each with dedicated resources.
Dedicated RAM and CPU
Root/administrator access
Better performance than shared hosting
Business websites
Web applications
Hosting CMS platforms (WordPress, Joomla)
An entire physical server is dedicated to one customer.
Full control
High performance
Higher cost
Large enterprise websites
High-traffic portals
Custom server configurations
Websites are hosted on a cluster of servers, not a single machine.
High availability
Easy scalability
Pay-as-you-use
E-commerce websites
SaaS platforms
Applications requiring uptime and scalability
The hosting provider manages:
OS updates
Security patches
Backups
Monitoring
Organizations without in-house IT teams
Businesses wanting reduced operational overhead
Allows businesses to resell hosting services under their own brand.
Web designers
IT service providers
Digital agencies
Company websites
E-commerce stores
Blogs and content portals
Web-based applications
Knowledge base portals
CRM and ERP front-ends
VPS or cloud server
Linux OS (Ubuntu / CentOS)
Place:
index.html
style.css
images and scripts
Point domain A record to server public IP
Open:
Web Server: Apache / Nginx
Language: PHP / Python / Node.js
Database: MySQL / PostgreSQL
Fix
Check DNS records
Verify web server service status
Confirm firewall allows ports 80/443
Fix
Enable caching
Upgrade hosting plan
Optimize images
Use CDN
Fix
Restore from backup
Update CMS and plugins
Change credentials
Harden server security
Use HTTPS (SSL/TLS)
Keep OS and software updated
Use strong passwords
Restrict admin access
Enable firewall and intrusion detection
Regular backups
Choose hosting type based on traffic and workload
Use SSD-based storage
Enable automatic backups
Monitor uptime and performance
Separate production and testing environments
Use CDN for global performance
Document server configuration
| Aspect | Web Hosting | Domain |
|---|---|---|
| Purpose | Stores website files | Website name |
| Example | Server space | example.com |
| Dependency | Needs domain | Needs hosting |
Web hosting is the foundation of any online presence, enabling websites and applications to be accessible over the internet. From shared hosting for small sites to cloud hosting for enterprise-grade applications, the right hosting choice depends on performance needs, security requirements, scalability, and budget.
Understanding web hosting architecture and best practices allows organizations to build reliable, secure, and scalable web platforms.
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