Cloud Hosting Explained: Advantages, Disadvantages, IaaS vs PaaS, Cloud Hosting Companies and Examples for Websites and Apps

Updated September 2026 · Written and maintained by the Progression Agency strategy team

Cloud hosting runs a website or application on virtual servers drawn from a pool of physical machines, so capacity can grow, shrink and move when hardware fails. This guide explains what cloud hosting is, IaaS versus PaaS versus serverless, its advantages and disadvantages, the cloud hosting companies that matter, real examples for websites and applications, what it costs, and how to decide whether your site needs it.

What is cloud hosting?

Cloud hosting provisions virtual servers, storage and services on demand from a shared pool of hardware, billed by usage. If a physical machine fails, workloads move; if traffic rises, more capacity is added, automatically or with a click. The NIST definition of cloud computing (SP 800-145) lists the essential characteristics: on-demand self-service, broad network access, resource pooling, rapid elasticity and measured service. IBM, Google and AWS publish plain explanations: IBM, Google Cloud, AWS.

IaaS, PaaS, SaaS and serverless

Cloud hosting is sold in layers that differ by how much you manage: infrastructure (IaaS), platform (PaaS), finished software (SaaS) and serverless functions that run only when called. The table shows what you and the provider each handle in every model.

Cloud hosting advantages

The advantages of cloud hosting come from capacity you can change by the hour and services you do not have to run yourself. The ones that matter to a business site are:

• Elasticity: add or remove capacity with demand, so launches and seasonal spikes do not take the site down.
• Resilience: hardware failure moves workloads; multi-zone and multi-region designs survive data-center outages.
• Managed services: databases, storage, queues, caches and AI services without running them yourself.
• Pay for what you use, with no hardware purchase and quick provisioning.
• Global reach: regions and edge locations near users.
• Security and compliance tooling: identity management, encryption, audit logs and certifications inherited from the provider.
• Automation: everything can be defined as code and reproduced.

Cloud hosting disadvantages

The disadvantages of cloud hosting are the mirror of its advantages: flexibility brings complexity, and usage billing brings surprises. The ones to plan for are:

• Complexity: hundreds of services and settings; misconfiguration is the common cause of breaches and bills.
• Unpredictable cost: usage billing needs budgets, alerts and periodic right-sizing; egress charges surprise people.
• Skills: operating cloud infrastructure well needs DevOps capability or a managed partner; see DevOps services.
• Lock-in: managed services differ between providers; portable designs (containers, Postgres, object storage) reduce it.
• Overkill for simple sites: a brochure site on raw cloud infrastructure costs more time than it saves.

Cloud hosting companies

Cloud hosting companies fall into hyperscalers, developer clouds and managed layers that sit on top of them, and the right one depends on how much operations work you want to own. The table compares the main names.

Cloud hosting examples

Cloud hosting examples are easiest to understand as setups for a specific kind of site, from a marketing site on a CDN to a SaaS product on managed containers. The table shows what each looks like in practice.

Cloud hosting cost

Small sites cost $10-$30 a month on a single cloud instance or nothing on a platform free tier; production applications with managed databases and load balancing $150-$600 before traffic; scaled systems far more. Reserved and committed-use pricing cuts steady compute cost by 30-60%. See website hosting cost and AWS vs Azure vs Google Cloud.

Cloud hosting management

Someone must design the landing zone, define infrastructure as code, set budgets, patch, monitor and respond. Options are an in-house DevOps engineer, a managed service provider, or a platform that hides the infrastructure. For most small and mid-size companies the platform route (Vercel, Cloud Run, managed WordPress) is the right level of cloud; see DevOps services and cloud migration services.

Do you need cloud hosting? A decision rule

Most business websites do not need raw cloud infrastructure, because managed hosting and builders already run on the cloud for you; applications, variable traffic and integrations are what justify it. The table applies that rule by situation.

How Progression Agency uses cloud hosting

We deploy applications to AWS, Google Cloud or Azure and to platforms built on them, with infrastructure as code, budgets and monitoring, in the client’s own accounts. Sites that do not need it go on managed hosting instead. See hosting types compared.

Cloud hosting pros and cons

The pros and cons of cloud hosting are the mirror image of a dedicated server. Cloud hosting pros and cons in short: on the plus side, elastic capacity, per-hour billing, managed databases and global regions; on the minus side, bills that grow with usage, a learning curve, and egress fees that surprise media-heavy sites. Hosting vs cloud hosting is therefore a question of variability: steady traffic is cheaper on fixed servers, spiky or global traffic is cheaper in the cloud. Choosing a cloud hosting company comes down to which managed services you will use; cloud hosting best fits are set out in the provider table above, and cloud hosting what-is questions are answered at the top of this page.

Frequently asked questions