What does “moving to the cloud” actually mean?

Moving from on-prem servers to the cloud means shifting workloads that are hosted and maintained locally — such as file servers, application servers, and databases — to cloud-based platforms.

This might include:

• Microsoft Azure infrastructure

• Cloud-hosted virtual servers

• Software-as-a-Service (SaaS) platforms

• Hybrid environments combining cloud and on-prem systems

For most businesses, the move is incremental, not all-or-nothing.

Why businesses move away from on-prem servers

Traditional on-prem servers can still work well, but they come with increasing challenges.

Common drivers for cloud migration include:

• Ageing or end-of-life server hardware

• Rising maintenance and support costs

• Limited resilience and redundancy

• Remote and hybrid working requirements

• Difficulty scaling infrastructure

• Power, cooling, and space constraints

Cloud migration is often triggered by a server refresh decision rather than a desire for “the cloud” itself.

How cloud infrastructure differs from on-prem servers

Understanding this difference is critical to a successful migration.

On-prem servers

• Hardware owned and maintained locally

• Single physical location

• Power, cooling, and backup responsibility sits with the business

• Fixed capacity unless upgraded

Cloud infrastructure

• Hosted in resilient data centres

• Built-in redundancy and availability options

• Consumption-based pricing

• Scales up or down as needed

Cloud reduces many physical risks, but requires careful design to avoid cost and security issues.

Common challenges when moving to the cloud

Most issues arise from poor planning rather than cloud technology itself.

Typical challenges include:

• Migrating unsuitable legacy applications

• Underestimating data transfer and dependencies

• Poor identity and access design

• Unexpected running costs

• Lack of clarity over ownership and responsibility

• Assuming cloud equals “hands off” management

A cloud environment still needs active management.

What a successful cloud migration looks like

Well-executed migrations typically result in:

• Improved resilience and uptime

• Reduced dependency on physical infrastructure

• Better support for remote work

• Clearer security controls

• Predictable disaster recovery options

The goal is improved reliability and flexibility, not just a new hosting location.

Pre-migration checklist (before moving anything)

This stage determines success or failure.

✔ Identify which servers and workloads are suitable for cloud

✔ Assess application compatibility and dependencies

✔ Review data sensitivity and compliance requirements

✔ Design identity, access, and security controls

✔ Decide on cloud vs SaaS alternatives

✔ Confirm backup, recovery, and retention requirements

✔ Estimate ongoing cloud costs

✔ Define migration phases and success criteria

Migrating everything “as is” rarely delivers the expected benefits.

Migration approaches: how businesses typically move

There is no single correct approach.

Common strategies include:

• Lift and shift (move first, optimise later)

• Re-platforming (minor changes for cloud compatibility)

• Re-architecting (redesign for cloud-native services)

• Hybrid models (some systems remain on-prem)

The right choice depends on risk, complexity, and business priorities.

Post-migration checklist (after the move)

Once workloads are live in the cloud:

✔ Validate performance and availability

✔ Confirm backups and disaster recovery

✔ Review security and access permissions

✔ Monitor costs and usage

✔ Update documentation and procedures

✔ Restrict or decommission on-prem servers

✔ Review business continuity plans

Leaving legacy servers running unnecessarily often introduces confusion and risk.

Security and resilience considerations

Cloud platforms provide strong foundations, but configuration matters.

Key areas to address:

• Identity and access management

• MFA and conditional access

• Network segmentation and firewalls

• Monitoring and logging

• Backup beyond default cloud protections

Power, hardware, and downtime reduction

One major benefit of cloud migration is reduced exposure to:

• Local power outages

• Hardware failures

• Cooling and environmental issues

However, local risks don’t disappear entirely.

Businesses should still consider:

• UPS devices for remaining on-prem equipment

• Redundant internet connections

• Clear failover and recovery procedures

Cloud reduces downtime risk — it doesn’t eliminate the need for planning.

Example cloud migration scenario

A multi-site organisation relied on on-prem servers hosted at head office. Power issues and ageing hardware led to repeated outages.

By migrating core workloads to the cloud:

• Resilience improved

• Site-to-site dependencies were reduced

• Recovery times shortened significantly

• On-prem hardware was simplified

The migration reduced both downtime and long-term infrastructure risk.

Is moving to the cloud right for every business?

Not always.

Some systems may:

• Require low-latency local access

• Depend on legacy software

• Be constrained by regulation

For most organisations, a hybrid or phased approach delivers the best balance.

People Also Ask

Is the cloud more reliable than on-prem servers?

Cloud platforms offer higher availability options, but reliability depends on design, configuration, and connectivity.

Does moving to the cloud reduce downtime?

It often reduces hardware-related downtime, but poor planning can still cause outages.

Is cloud cheaper than on-prem servers?

Costs shift from capital to operational spending. Savings depend on usage, optimisation, and management.

Can businesses move back from the cloud?

Yes, but planning and data portability should be considered upfront.

Do we still need backups in the cloud?

Yes. Cloud providers offer resilience, but independent backups remain essential.