Choosing a hosting type determines how a website behaves under load and how much work falls on the administrator. Shared hosting, VPS, a dedicated server, and cloud all solve the same task — hosting a website — but they split resources and responsibility differently. This article covers how they differ and how to tell when it is time to move to the next level. A wrong choice usually costs more than it seems: moving between hosting types takes time and often requires technical maintenance.
How the main hosting types are built
The difference between hosting types comes down to how physical hardware is shared among customers and who is responsible for configuring it.
- Shared hosting — one physical server is split among dozens or hundreds of accounts, resources are shared.
- VPS — a server is divided into isolated virtual machines with a fixed share of CPU, memory, and disk.
- Dedicated server — all the physical hardware is handed over to a single customer.
- Cloud — resources are drawn from a pool of several physical servers and allocated on demand.
Shared hosting: who it suits
Shared hosting is the most accessible way to host a site: the control panel, mail, and database are already set up, so there is no need to administer a server. The price of simplicity is shared resources: heavy traffic on a neighboring account can slow down sites on the same server. The provider sets limits on CPU, memory, and number of processes so that one account does not get in the way of the rest — the exact limits that apply are described in the article hosting limits. This option suits business-card sites, blogs, and online stores at the start. If a plan regularly hits its limits, that is a signal to think about moving on rather than tolerating recurring slowdowns.
VPS: a virtual dedicated server
A VPS gives the site a guaranteed share of a physical server's resources and full access to the operating system. The administrator installs packages and configures the web server and database alone, but nothing else takes resources away. How much is actually available to the virtual machine can be checked with standard commands.
free -m
df -h
nprocMoving from shared hosting to a VPS usually happens when a site runs out of shared resources or needs a non-standard software stack. The migration order is described in the article migrating from shared to VDS. This move is worth planning ahead of time, not at the moment the site already stops responding under load.
A dedicated server and how it differs from a VPS
A dedicated server hands the customer the entire physical hardware: CPU, memory, and disks are not shared with anyone. This removes "noisy neighbors" and gives direct access to the hardware, but the cost and the responsibility for maintenance are higher than with a VPS. A detailed comparison is in the article dedicated server versus VPS. Because of this, dedicated servers are more often chosen for tasks with predictably high and constant load rather than for small projects.
Comparing hosting types
| Type | Resources | Who it suits |
|---|---|---|
| Shared | Shared, with per-account limits | Business cards, blogs, a store at the start |
| VPS | Fixed share of CPU, memory, disk | Growing projects, a non-standard software stack |
| Dedicated server | All hardware of one physical server | High load, strict hardware requirements |
| Cloud | Pool of resources from several servers, scalable | Variable load, peak traffic |
How to choose a hosting type and when to move up
- Assess the current load: visits per day, database size, amount of files.
- Check whether the site fits within the shared plan's CPU and memory limits.
- If limits are hit regularly, not just once, plan a move to a VPS.
- For projects with variable and unpredictable load, consider cloud resources.
- For stable high load and specific hardware requirements, choose a dedicated server.
Frequently asked questions
Can you move from shared hosting to a VPS without losing data?
Yes, the migration is done by copying files and the database to the new server and checking the copy before switching the domain, so the old site keeps working until the check is complete.
How does cloud differ from VPS in reliability?
Cloud draws resources from several physical servers, so one node failing usually does not stop the site, while a VPS is tied to a single physical server and depends on its state.
Does a dedicated server need an administrator?
Yes, a dedicated server gives the customer full access to the hardware, which means full responsibility for configuring, updating, and securing the operating system.