Cloud vs colocation: key questions for IT and infrastructure decisions
Cloud computing and colocation are two common approaches for running business infrastructure in external data centre environments. Cloud services typically run from large-scale cloud data centres, while colocation allows organisations to place their own hardware inside professionally operated facilities. Each model offers different levels of control, flexibility and operational responsibility.
Full answer
How secure is cloud computing for critical data?
Security in cloud computing comes down to controls across infrastructure, networks, identity, monitoring, and recovery, with UK data residency included where regulatory or governance requirements depend on hosting location. This FAQ addresses how cloud computing security protects critical and regulated data across infrastructure, networks, identity, monitoring, and recovery controls.
Full answer
What is edge colocation and when does it make sense?
Edge colocation places infrastructure across multiple data centre locations to support application performance, connectivity and operational requirements. Instead of relying on a single centralised site, organisations deploy workloads in regional facilities closer to where data is generated or used. This FAQ explains what edge colocation is, how edge data centres work, and when this approach fits infrastructure strategy.
Full answer
Where is cloud data stored and how does it work?
Cloud storage services run on physical infrastructure hosted in data centres. While data is accessed through cloud platforms, it is stored on hardware located in specific facilities and regions. This FAQ explains where cloud data is stored, how cloud data storage works, and why location, connectivity and control matter when managing data in the cloud.
Full answer
What is hybrid cloud computing and who needs it?
Hybrid cloud computing allows organisations to operate workloads across a combination of private infrastructure, public cloud platforms, and, where required, existing on-premise systems. It is typically adopted when a single environment does not meet operational, regulatory, performance, or continuity requirements. This FAQ explains how hybrid cloud computing works, how it compares with cloud computing vs on-premise infrastructure, and how cloud computing hosting providers and managed services support hybrid environments.
Full answer
Why does location matter when choosing a data centre?
Cloud services and digital platforms still depend on physical infrastructure hosted in data centres. Where that infrastructure is located affects how applications connect to users, how networks are routed, and how organisations manage resilience across sites. This FAQ explains why location matters when choosing a UK data centre, how regional data centres support infrastructure strategy, and why many organisations look for facilities close to their operations when placing critical workloads.
Full answer
Business benefits of colocation
Colocation allows organisations to place their own servers and IT equipment in a secure, professionally managed data centre environment. Instead of maintaining infrastructure on-site, businesses use a specialist facility that provides power, cooling, connectivity and physical security.
Full answer
Colocation data centre pricing: UK cost and ROI
Colocation pricing depends on how infrastructure is deployed, how much power it consumes, and how it is connected. Rather than a single fixed cost, organisations typically assess pricing alongside total cost of ownership (TCO) and return on investment (ROI) to understand long-term value. This FAQ explains how colocation pricing works in the UK, what drives costs, and how organisations evaluate ROI when comparing colocation with other infrastructure options.
Full answer
Cloud service models explained: IaaS vs PaaS vs SaaS
Cloud computing services are typically delivered through three main service models. Each model defines which parts of the technology stack are operated by the provider and which remain under the customer’s control. This FAQ explains the differences between infrastructure, platform and software services, and how organisations choose between IaaS, PaaS and SaaS when planning cloud environments.
Full answer
What is cloud Infrastructure as a Service (IaaS)?
Cloud infrastructure as a service (IaaS) provides on-demand compute, storage and networking, while leaving you in control of the operating system and application layer. For UK organisations, IaaS decisions often come down to operational ownership, audit readiness and where infrastructure is hosted. This FAQ sets out what IaaS includes, who it suits, how responsibility is typically split, and what to look for when comparing IaaS cloud solutions.
Full answer
What is a Tier 1–4 data centre?
Data centre tiers are used to classify infrastructure based on resilience, redundancy and expected uptime. The most widely referenced framework is the tier classification model, which defines four levels of data centre design from basic capacity to highly resilient environments. This FAQ explains how data centre tier classification works, what distinguishes each tier, and how organisations use these classifications when selecting infrastructure.
Full answer
Is colocation right for my business?
Colocation is used by organisations that need reliable infrastructure without operating their own data centre facilities. The most geographically diverse colocation provider in the UK, Pulsant offers purpose-built data centre environments where businesses can place equipment while retaining control over systems, configuration and performance. This FAQ explains why businesses use colocation, when it makes sense, and how to assess whether it fits your infrastructure and operational requirements.
Full answer
Edge Data Centres vs Traditional Data Centres: What's the Difference?
The distinction between edge data centres and traditional data centres matters more as businesses move away from centralised infrastructure toward models that prioritise speed, proximity and flexibility. Our platformEDGE network brings together 14 interconnected UK edge data centres, connected by a private 100Gbps network and accessible from every major UK region. This FAQ covers the key differences and how they affect infrastructure decisions.
Full answer
How AI and Cloud Computing work together
AI workloads place demands on infrastructure that traditional cloud environments were not originally designed to meet. As UK organisations move from AI experimentation into production, the relationship between AI and cloud computing, where workloads run, how data moves, and how performance and compliance are maintained, becomes a practical infrastructure question. This FAQ covers how AI and cloud computing work together, and what that means for how infrastructure needs to be designed and placed.
Full answer
How to choose a UK colocation provider
Choosing the right colocation provider affects how your infrastructure performs, scales and is governed over time. With a range of data centre colocation providers across the UK, the decision comes down to more than price. Location, connectivity, resilience, certifications and the provider's ability to grow with your business all play a role. Pulsant operates 14 interconnected data centres across the UK, making it the most geographically diverse colocation provider in the UK. This FAQ covers what to look for and how to evaluate your options.
Full answer
What security should a data centre provide?
Data centre security covers everything from who can walk through the door to how the facility responds to a power failure at 3am. For organisations housing critical infrastructure, understanding what security a data centre should provide is as important as evaluating connectivity or pricing. Pulsant operates 14 UK data centres built to enterprise security standards, holding ISO 27001, PCI DSS and Cyber Essentials accreditations across the estate. This FAQ covers the security layers you should expect from a well-run facility
Full answer
Colocation data centre pricing: UK cost and ROI
Colocation pricing depends on how infrastructure is deployed, how much power it consumes, and how it is connected. Rather than a single fixed cost, organisations typically assess pricing alongside total cost of ownership (TCO) and return on investment (ROI) to understand long-term value. This FAQ explains how colocation pricing works in the UK, what drives costs, and how organisations evaluate ROI when comparing colocation with other infrastructure options.
Full answer
Preventing data breaches in cloud & colocation
Preventing data breaches in cloud and colocation environments takes more than adding another security product. Risk often builds through weak access controls, inconsistent settings, poor visibility across platforms, or gaps in the way sensitive data is handled. Those issues become harder to manage when workloads are spread across cloud, colocation, and hybrid estates. These FAQs look at practical ways to reduce breach risk across modern infrastructure. They cover common threat areas, stronger security controls, and how resilient UK-based environments can support governance, containment, and recovery.
Full answer
What is managed IaaS
Managed IaaS sits between self-managed public cloud and fully hands-on infrastructure. It gives organisations on-demand infrastructure with operational support around the service, which is why it often comes into the conversation when teams are reassessing cost, performance, or control. These FAQs explain what managed IaaS includes, how it differs from DIY cloud, and why cloud repatriation has become a more active strategy for some workloads. They also show how UK-hosted infrastructure can support sovereignty, compliance, and more predictable operations.
Full answer
What are the biggest data centre security threats today?
Data centre security threats are increasingly driven by highly interconnected infrastructure. Security risks now extend beyond traditional firewalls to include APIs, cloud integrations, remote management tools, and building systems. The most significant threats fall into two categories: cybersecurity attacks (such as DDoS and API exploitation) and physical security risks (such as unauthorised access and compromised building management systems). Even small configuration errors can now create serious vulnerabilities due to system interdependence.
Full answer
![]()
Cloud computing and colocation are two common approaches for running business infrastructure in external data centre environments. Cloud services typically run from large-scale cloud data centres, while colocation allows organisations to place their own hardware inside professionally operated facilities. Each model offers different levels of control, flexibility and operational responsibility.
Q: What is the difference between cloud computing and colocation?
A: Cloud computing delivers infrastructure as a service (IaaS) from a cloud data centre environment, where the provider operates the hardware and platform while organisations deploy and manage workloads on virtualised resources. Colocation takes a different approach. Businesses own their physical servers but place them in a third-party data centre that supplies power, cooling, security and network connectivity. The main difference is ownership and operational responsibility: cloud infrastructure is service-delivered, while colocation keeps infrastructure under the customer’s control.
Q: What is a cloud data centre?
A: A cloud data centre is a physical facility that hosts the infrastructure used to deliver cloud services. Servers, storage systems and networking equipment are installed in secure environments with resilient power, cooling and connectivity. Cloud platforms then use virtualisation and management software to deliver those resources to organisations as scalable services.
Q: How do data centres support cloud computing?
A: Data centres provide the physical environment where cloud infrastructure operates. They supply the core requirements for running large-scale computing platforms, including power distribution, cooling systems, network connectivity and physical security. Cloud computing builds on top of these facilities by delivering virtualised infrastructure that organisations can provision and manage without owning the underlying hardware.
Q: When should a business choose cloud computing instead of colocation?
A: Cloud computing is often chosen when organisations need flexibility and the ability to scale infrastructure fast. Because capacity is delivered as a service, teams can increase or reduce resources based on workload demand without purchasing hardware. This approach is often suitable for development environments, applications with variable usage patterns, or organisations that prefer not to manage physical infrastructure.
Q: When is colocation a better option than cloud?
A: Colocation can be the better choice when organisations require direct control over their hardware or need to run specific configurations that may not be supported in shared cloud platforms. It is also commonly used where businesses already own infrastructure or need predictable performance characteristics from dedicated servers.
Q: Can organisations combine cloud and colocation?
A: Yes. Many organisations run workloads across both models. For example, critical or legacy systems may remain on dedicated hardware in colocation, while newer applications run in cloud environments for flexibility and scalability. This combined approach is often used in hybrid infrastructure strategies where connectivity between environments is carefully managed.
Q: Which is more secure: cloud or colocation?
A: Both approaches can support strong security when implemented correctly, but responsibility is handled differently. In cloud environments, the provider secures the underlying infrastructure and platform, while customers manage application security, identities and configuration. With colocation, organisations retain full responsibility for their hardware and software but benefit from the physical security and resilience provided by the data centre facility.
Q: How do costs compare between cloud and colocation?
A: Cloud services typically follow a consumption model where organisations pay for the resources they use. This reduces upfront investment but costs can vary depending on workload demand. Colocation involves purchasing and maintaining hardware while paying for rack space, power, cooling and connectivity within the facility. For organisations that already own infrastructure, colocation may offer more predictable long-term costs.
Q: How does scalability differ between cloud and colocation?
A: Cloud environments allow organisations to scale infrastructure quickly by provisioning additional resources through service portals or management tools. In colocation environments, scaling usually requires purchasing additional hardware and expanding rack capacity within the data centre. While both models support growth, cloud typically enables faster scaling when demand changes.
Q: What should businesses consider when choosing between cloud and colocation?
A: Organisations usually evaluate how much control they need over infrastructure, how predictable their workloads are, how quickly they need to scale capacity, and what security or compliance requirements apply. Budget structure, internal operational expertise and long-term technology strategy also influence whether cloud computing, colocation or a combination of both will be the most suitable approach.
Learn more about cloud vs colocation
If you are evaluating where to run your workloads, understanding the differences between cloud computing and colocation can help clarify the right approach for your infrastructure strategy. Read our full guide here
Contact Us