Modernisation

Legacy System Modernisation with Operational Continuity

Structured discovery, assessment and incremental modernisation of business-critical legacy systems - designed to reduce risk and improve capability without disrupting operations.

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The Challenge

Problems this service addresses

Maintenance Burden

Legacy platforms are expensive to maintain, difficult to enhance and increasingly reliant on scarce skills.

Integration Barriers

Legacy systems cannot easily integrate with modern tools, blocking automation and digital improvement initiatives.

Operational Risk

Business-critical workflows running on unsupported or fragile platforms create continuity and security risks.

Unclear Dependencies

Years of incremental changes have created undocumented dependencies, making modernisation seem riskier than it may be.

All-or-Nothing Thinking

Teams assume modernisation requires a complete rip-and-replace, when a phased approach may be more achievable and lower risk.

Data Integrity Concerns

Fear of data loss or corruption during migration prevents organisations from taking action.

Business Outcomes

What you can expect

A clear modernisation roadmap based on dependency mapping and risk assessment
Incremental modernisation that preserves operational continuity
Improved integration with current technology estates
Reduced maintenance burden through targeted replatforming
Documented system dependencies and risk profile
A phased approach that delivers value at each stage rather than only at completion

Technical Capabilities

What we deliver

Technical discovery and system assessment

Dependency mapping and risk analysis

Replatforming and migration planning

Incremental modernisation strategies

Data integrity and migration planning

Regression testing strategy and execution

Operational continuity planning

Integration architecture for modernised components

Phased rollout with parallel running

Rollback planning and risk mitigation

Engagement Scenarios

Typical situations we address

Workflow Platform Modernisation

An organisation with workflows on a legacy platform needs to assess whether to upgrade, replatform or migrate to Power Automate or another platform.

Application Replacement

A business-critical legacy application needs replacing with a modern alternative while maintaining data, integrations and operational continuity.

Integration Modernisation

Legacy integration points need updating to connect with modern APIs and cloud services.

Phased Platform Migration

An organisation needs to migrate from a legacy platform incrementally, moving workflows in priority order rather than all at once.

Integration

Integration considerations

Oracle E-Business Suite

SAP and other ERP platforms

Legacy on-premise databases

SharePoint on-premise

Custom web services and APIs

Microsoft Power Platform and Dataverse

Governance & Security

Governance and security considerations

Operational Continuity

Modernisation is phased to maintain operational continuity, with parallel running, rollback plans and clear cutover criteria.

Data Integrity

Data migration is planned with validation, reconciliation and rollback capability to ensure no data loss or corruption.

Regression Testing

Structured regression testing ensures modernised components produce the same outcomes as the systems they replace.

Delivery Approach

How we work

Discovery

Map the legacy estate, its dependencies, integrations, business criticality and operational constraints.

Assessment

Assess modernisation options - retain, improve, replatform or migrate - with risk, effort and benefit analysis.

Roadmap

Produce a phased modernisation roadmap with priorities, risk mitigations and continuity plans.

Delivery

Execute modernisation in phases with testing, validation and operational handover at each stage.

Related Services

Complementary expertise

Microsoft Power Platform Consultancy

Architecture, governance and delivery for Power Apps, Power Automate and Dataverse across regulated enterprise environments.

Learn more

Business Process Automation

Workflow discovery, orchestration and automation for business-critical processes across finance, operations and administration.

Learn more

Power Apps Development

Bespoke enterprise application development using canvas and model-driven apps with Dataverse, role-based security and system integrations.

Learn more

Frequently Asked Questions

Do we have to replace our entire legacy system at once?

No. In most cases, a phased approach is more achievable and lower risk. We help you identify which components are highest priority for modernisation and which can be retained, improved or integrated in the short term.

How do you minimise the risk of modernisation?

Through structured discovery, dependency mapping, phased delivery, parallel running, regression testing and rollback planning. We modernise incrementally so that issues are caught early and impact is contained.

Can you modernise workflows running on K2 or other legacy platforms?

Yes. We have experience modernising workflows from legacy platforms including Nintex K2. The approach may involve upgrading, replatforming to Power Automate, or a hybrid strategy depending on the specific workflows and their dependencies.

How do you handle data migration from legacy systems?

Data migration is planned with mapping, validation, reconciliation and rollback capability. We run migrations in controlled phases with verification at each stage to ensure data integrity.

What if our legacy system has undocumented features and dependencies?

This is common. Our discovery process includes technical investigation, stakeholder interviews and system analysis to surface undocumented dependencies before any modernisation begins.

Ready to discuss modernisation?

Speak to OptiFyne about your requirements. We'll help you assess the right approach for your environment and constraints.

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