Hosting tiers are mostly a question of how many other people share the machine your site runs on, and how much of the administration is your problem. Understanding that makes the choice much simpler than the marketing pages suggest.
Shared hosting
Many websites run on one server, sharing its processor, memory and disk. The host handles the operating system, security patching and server software. You get a control panel and upload your site.
Suits: personal sites, blogs, brochure sites for small businesses, portfolios, and anything with modest and fairly predictable traffic.
The real limitation is not usually the advertised storage or bandwidth. It is the resource limits buried in the terms — concurrent processes, memory per process, database connections, CPU seconds. A site that exceeds these gets throttled or suspended, and those limits are what actually determine how much traffic you can handle.
The other consideration is the "noisy neighbour" effect: another site on the same machine consuming resources can slow yours. Better hosts isolate accounts more effectively, and this is a real difference between cheap and mid-range shared hosting.
VPS hosting
A virtual private server divides one physical machine into isolated virtual ones, each with allocated CPU, memory and storage. Your resources are yours; a neighbouring VPS cannot consume them.
Suits: growing sites that have outgrown shared limits, sites needing specific software or configuration, small applications, staging environments, and anyone who wants root access.
The critical distinction is managed versus unmanaged. Unmanaged means you get a bare server and everything above the hypervisor is your responsibility — operating system updates, web server configuration, security hardening, backups, monitoring. It is cheaper and it is a genuine ongoing commitment. Managed VPS costs more and the host handles the system administration.
If you do not know how to secure a Linux server and keep it patched, an unmanaged VPS is not a saving. It is an unpatched server on the public internet.
Cloud hosting
The term is used loosely. Broadly it means your site runs across pooled infrastructure rather than one fixed machine, so capacity can scale and a single hardware failure does not take you offline.
Suits: sites with variable or spiky traffic, applications needing to scale quickly, and anyone who values redundancy.
Two pricing models exist and they behave very differently. Fixed-plan cloud hosting is priced like a VPS and is predictable. Usage-based cloud bills for what you consume, which is efficient at low traffic and can produce large unexpected bills during a spike or a misconfiguration. If you use a usage-based provider, set billing alerts on day one.
Dedicated servers
An entire physical machine for you alone. Maximum performance and control, highest cost, and full responsibility unless you buy a managed plan.
Suits: high traffic, heavy databases, specific compliance requirements, or workloads that need particular hardware. Most sites never need one.
Managed platform hosting
Worth mentioning separately: hosting optimised for one platform, most commonly WordPress. The host handles caching, updates, security rules and backups specific to that software.
It costs more than general shared hosting and removes a lot of maintenance. The trade-offs are less flexibility, sometimes restrictions on which plugins you can install, and pricing frequently tied to monthly visitor counts — check what happens when you exceed the allowance.
How to choose
Ask three questions.
What does the site do? A brochure site with a contact form has entirely different needs from a shop processing orders or an application running background jobs.
How much traffic, and how evenly? Steady modest traffic suits shared hosting. Spiky traffic favours something that can scale or absorb the peak.
Who is administering it? This is the question people skip. If nobody on your side can maintain a server, buy managed hosting at whatever tier. The cost difference is smaller than the cost of a compromised or broken site.
Start smaller than you think
Most new sites are over-provisioned. Shared hosting handles a great deal more than its reputation suggests, and upgrading later is straightforward — most hosts will migrate you within their own platform at no cost.
The signals that you have genuinely outgrown a tier are concrete: pages slowing under normal traffic, resource limit warnings from the host, suspensions during traffic peaks, or needing software the plan will not run. Upgrade when you see those, not in anticipation of them.