TL;DR:
Cloud deployment models are the four ways to host and manage cloud infrastructure — public, private, hybrid and multicloud — each trading off cost, control and scalability differently. Picking the wrong one is costly: too much public cloud risks losing control over sensitive workloads, while too much private infrastructure means paying for capacity you don’t use. Public cloud is cheapest and easiest to scale but offers the least control; private cloud offers the most control at the highest cost; hybrid and multicloud sit between the two. The right choice depends on what your organization needs to control most: cost, compliance, or speed.
Finding the right cloud deployment model starts with knowing what your organization actually needs to control, not which option is trendiest. Choosing wrong is a costly mistake: too much public cloud and you lose control over sensitive workloads; too much private infrastructure and you’re paying for capacity you don’t use.
Cloud computing itself opens the door to better flexibility, capacity and scalability, but only if the deployment model underneath it fits how your business actually operates. The four models below differ mainly in who hosts your infrastructure and how much control you keep over it.
So, how do you choose the right model for your organization? Here’s what each one actually offers.
Glossary
- Public cloud: infrastructure hosted by third-party vendors over the internet, shared across multiple organizations.
- Private cloud: infrastructure hosted on-premises or by a third-party provider, dedicated to a single organization.
- Hybrid cloud: a combination of private and public cloud, letting organizations use both together.
- Multicloud: using multiple public cloud services, often from different providers, in parallel.
- SaaS (software-as-a-service): fully managed software delivered over the internet, no infrastructure to maintain.
- PaaS (platform-as-a-service): a managed platform for building and running applications without managing the underlying servers.
- IaaS (infrastructure-as-a-service): raw compute, storage and networking resources, managed by you on top of provider infrastructure.
What are deployment models in cloud computing?
The deployment models of cloud computing — public, private, hybrid and multicloud — decide who hosts your data and how much control you keep.
These four cloud computing deployment models cover every way an organization can host its infrastructure today. Public cloud is the most widely used because it’s the easiest to get started with. Private cloud gives an organization exclusive use of its own environment. Hybrid cloud combines the two. Multicloud spreads workloads across more than one public provider.
What is public cloud, and when does it make sense?
Public cloud is infrastructure shared among multiple organizations over the internet, the lowest-cost, fastest way to scale.
Public cloud comes in three main service types: software-as-a-service (SaaS), platform-as-a-service (PaaS) and infrastructure-as-a-service (IaaS). Think of it like a busy coworking space: desks, meeting rooms and facilities are shared among businesses, and everyone pays only for the space they use.
Public cloud lets you access resources on-demand and pay only for what you use, but it’s worth knowing that security and compliance responsibilities are shared between you and the provider, not fully outsourced. Compared to the other deployment models, public cloud offers a lower base cost and the fastest path to scale, at the expense of the most customization and control.
What is private cloud, and when does it make sense?
Private cloud is infrastructure dedicated to one organization, offering the most control and customization of any deployment model.
A private cloud deployment model is dedicated to a single organization. It’s the equivalent of having your own dedicated office building, fully customized to your company’s specific requirements, rather than sharing space with other tenants. That exclusivity is the foundation for tighter control over data, compliance and performance, with the flexibility to adapt the environment as your needs change.
Compared to the other deployment models, private cloud offers the greatest control over your data and infrastructure, but at a higher management cost than public cloud. If you want to see what a fully dedicated environment looks like in practice, ThinkOn’s private cloud (thinkon.com/private-hybrid-cloud/) is one example.
What is hybrid cloud, and when does it make sense?
Hybrid cloud combines private and public infrastructure, letting organizations balance security, cost and flexibility.
A hybrid cloud deployment model combines public and private infrastructure to capture the security benefits of one and the scalability of the other — like a headquarters that combines your own private office space with access to shared coworking facilities when you need overflow capacity. This model lets businesses dynamically allocate resources, scale applications and move data and workloads between environments as needs shift.
For small to mid-sized organizations, hybrid can be attractive because it lowers costs while preserving control over the workloads that matter most. ThinkOn markets its own hybrid-style offering as Virtual Private Cloud, a dedicated environment with public-cloud-style flexibility. According to Flexera’s 2024 State of the Cloud Report, multi-cloud adoption (most of it through hybrid models) reached 89% of organizations surveyed, up from 87% the year before.
What is multicloud, and when does it make sense?
The most important consideration when choosing the right cloud computing deployment model is the individual business needs of your organization.
A cloud-smart plan, based on where your business is and where you want it to be, is an important tool to expand your cloud computing options and serve the business goals of your evolving organization.
Choosing the right cloud deployment model, one that best helps your organization streamline processes, enhance collaboration, and accelerate time-to-market, can have a significant impact on your business. Make the cloud-smart choice!
An experienced and trusted cloud services provider can help you narrow down your options and choose the public, private, hybrid, or multicloud deployment model that will deliver the best outcomes for your business.
Multicloud uses multiple public cloud providers at once, maximizing flexibility but requiring more active management.
According to VMware, now part of Broadcom, not all cloud providers are created equal. Organizations adopt a multicloud strategy specifically to avoid depending on any single one. Think of it like leasing office space in several different buildings across different neighborhoods, each offering something the others don’t.
If you want the cost savings of public cloud but need to avoid vendor lock-in or combine best-of-breed tools from different providers, multicloud can deliver that — but it requires more active management to keep data secure and workloads coordinated across every provider you use. Spacelift’s research on cloud adoption found that only 8% of companies use a private cloud exclusively, while 84% use a hybrid or multicloud approach instead.
Cloud deployment model
| Attribute | Public cloud | Private cloud | Hybrid cloud | Multicloud |
| Cost profile | Lowest entry cost, pay-as-you-go | Higher fixed cost, dedicated resources | Mixed — pay for shared, fixed for dedicated | Variable, depends on provider mix |
| Control and customization | Lowest — shared, standardized | Highest — fully dedicated | Moderate — control where it matters most | Moderate — split across providers |
| Scalability | Highest, on-demand | Limited by owned capacity | High — burst to public when needed | High, but requires active management |
| Security responsibility | Shared with provider | Primarily yours | Split by workload | Split across every provider used |
| Data residency fit | Depends on provider region options | Easiest to control precisely | Workload-dependent | Hardest to control consistently |
| Best fit | Startups, variable workloads | Regulated or sensitive workloads | Most mid-to-large organizations | Organizations avoiding lock-in |
How do you choose the right cloud deployment model for your business?
The right cloud deployment model depends on what you need to control most: cost, compliance, scalability or speed to deploy.
The most important factor is the industry you’re in, the data you handle, and where your business wants to be in two years, not just today. A cloud-smart plan, based on where your business is now and where you want it to go, is the real tool for making this decision — not a preference for whichever model sounds most current.
Drill deeper into cloud computing and deployment models on our in-depth resource page.
FAQ
It shows how public, private, hybrid, and multicloud differ in cost, control, security, and scalability — helping you match infrastructure to your workload needs.
The three core types are public, private, and hybrid cloud — multicloud is a fourth option many businesses adopt as needs grow
Choose hybrid when you need on-premises control with cloud flexibility; choose multicloud to avoid vendor lock-in and combine strengths from different providers.
Private cloud typically offers the strongest security and control since resources are dedicated, though public and hybrid models can meet compliance needs too.
