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. 

Q: What is hybrid cloud computing?

A: Hybrid cloud computing is an architecture that combines private infrastructure and public cloud services into a connected, governed environment. Workloads are placed based on performance, compliance or resilience requirements, with defined controls over how data moves between platforms and how access, monitoring and recovery are handled across the estate.

Q: How does hybrid cloud computing work?

A: Hybrid cloud environments connect private infrastructure and public cloud services through secure, managed connectivity. Some workloads stay on private platforms for compliance, performance or operational control, while others use public cloud for elasticity or specialist services. To make that model work, traffic needs controlled routing between environments. Pulsant Edge Fabric provides private connectivity between Pulsant sites, with access to peering exchanges and public cloud platforms.

Q: What is the difference between cloud computing vs on-premise infrastructure?

A: Cloud computing uses infrastructure hosted in external data centres and delivered as a service, while on-premise infrastructure is owned and operated within an organisation’s own facilities. Hybrid cloud combines these approaches, keeping some systems on-premise where required while placing other workloads on private or public cloud platforms for resilience and scalability. For organisations moving infrastructure out of local server rooms, colocation can host existing hardware in a professionally managed data centre environment.

Q: Who needs hybrid cloud computing?

A: Hybrid cloud computing is often adopted by organisations that:

• Operate regulated or sensitive workloads
• Maintain legacy systems that cannot be fully migrated
• Require multi-site resilience
• Need certain data sets or systems kept in a separate environment while still connecting to cloud services

It is particularly relevant where data classification, jurisdiction or continuity planning require different hosting approaches within the same operational estate.

Q: Is hybrid cloud suitable for regulated industries?

A: Hybrid cloud can support regulated industries when governance controls are defined across environments and hosting locations align with compliance and audit requirements. Many regulated organisations keep higher-sensitivity workloads on private infrastructure to maintain tighter control over residency, access and assurance, while using public cloud services for lower-risk applications. The key checks are consistent identity and access controls, monitoring and logging that supports audit, and documented recovery objectives for each workload based on criticality.

Q: How do cloud computing hosting providers support hybrid environments?

A: Cloud computing hosting providers support hybrid environments by hosting private infrastructure in secure data centres and providing the connectivity and operational controls needed to link private platforms with public cloud services. For buyers, the practical factors are physical security, resilient power and cooling, predictable network routing, segmentation, monitoring visibility, and clear responsibility boundaries for security and support. Pulsant supports hybrid deployments through its UK data centre network, Private Cloud services and Edge Fabric connectivity, which provides secure transit between locations and access to peering exchanges and public cloud services.

Q: What role does private connectivity play in hybrid cloud computing?

A: Private connectivity enables secure communication between private infrastructure and public cloud platforms using managed network paths. This reduces reliance on internet-facing routes and supports clearer segmentation between workloads. In hybrid architectures, connectivity design affects performance, monitoring visibility and operational control across sites, particularly for replication, backup and multi-site operations.

Q: How do cloud computing and managed services work together in a hybrid model?

A: Hybrid cloud can increase operational complexity because multiple environments must be monitored and governed consistently. Cloud computing and managed services can work together by centralising monitoring, patch management, configuration governance and resilience oversight across private and public components. The practical requirement is clear ownership for identity governance, application configuration, incident handling and recovery, so controls remain consistent across the hybrid estate.

Q: What should organisations check before adopting hybrid cloud computing?
A: Start with internal requirements and constraints: which data sets and applications can move, which must remain in a controlled environment, and what residency or audit requirements apply. Confirm integration dependencies, define target network routing and identity governance, agree recovery objectives per workload, and assess whether you have the operating model to manage more than one environment day to day, including change control and incident response.