Application Modernisation
Migrate legacy systems to modern architectures without losing the business logic your teams depend on.
Application Modernisation
Migrate legacy systems to modern architectures without losing the business logic your teams depend on.
Application Modernisation
Migrate legacy systems to modern architectures without losing the business logic your teams depend on.
Application Modernisation
Legacy systems carry risk. Modernisation removes it.
Outdated applications accumulate technical debt, resist change, and create security exposure. Vendors stop releasing patches. Developers avoid touching code they do not understand. The cost of inaction compounds every quarter. Modernisation is not a rewrite from scratch. It is a structured migration that preserves what works while replacing what does not.
of organisations report improvements in security, reliability, or scalability after modernisation (Red Hat/Konveyor, n=1,000)
define modernisation as improving their CI/CD pipelines, a significant increase compared to 2021
of modernisation budgets go to legacy systems, not new cloud applications
plan replatforming as a first step, followed by refactoring in a second step
Source: State of Application Modernization Report 2024, Red Hat/Konveyor, n=1,000
New opportunities through modernised applications
Improved performance
Modern runtimes, optimised data access patterns, and cloud-native scaling deliver measurably faster response times.
Lower maintenance cost
Managed services and automated operations reduce the engineering time spent keeping systems running.
Security currency
Modern frameworks receive active security patches. Legacy systems do not. Modernisation closes the exposure gap.
Developer productivity
Engineers work faster on codebases they understand, with tooling that supports them. Modernised systems attract and retain talent.
Regulatory readiness
Modern architectures make GDPR, ISO 27001, and DORA compliance easier to implement and audit.
Future scalability
Cloud-native architectures scale horizontally on demand. Legacy systems hit hard limits at the worst possible moment.
Future-Proofing
Modern technologies and architectures ensure long-term reliable operations with stable performance. Cloud-native architectures scale horizontally on demand.
Competitive Advantage
Gain a competitive edge through faster, better, and more reliable delivery of innovative features that your competition cannot match.
The right modernisation strategy for your situation
Not every application needs the same treatment. We use the 6R framework to determine the optimal path for each workload: Rehost, Replatform, Refactor, Rearchitect, Replace, or Retire. The goal is always the same: reduce operational risk, increase agility, and lower total cost of ownership.
Inventory and assessment
We map your application landscape, identify dependencies, and assess each workload against business criticality, technical debt, and modernisation potential.
Strategy and roadmap
We define the modernisation approach for each application, sequence the work to minimise disruption, and build a roadmap with clear milestones and resource requirements.
Migration and refactoring
We execute the migration in phases, with automated tests and rollback strategies at every step. No big-bang cutovers.
Validation and handover
We validate performance, security, and compliance post-migration, then hand over with full documentation and knowledge transfer.
Modernise your applications with Tallence
Consulting
Analyse your application landscape, develop a modernisation strategy, define a roadmap for modernisation.
Workshops
Courses on best practices, tools, and technologies. Hands-on training for development teams. Tailored courses on new technologies.
Implementation
Modernisation at application and system level. Migration to modern platforms. Refactoring of legacy systems.
Next step
Ready for migration?
Tallence guides you from the modernisation strategy through to full cloud migration.
FAQ
Frequently Asked Questions
Everything you need to know about application modernisation and our services.
Still have questions? We are happy to advise you. →How do we modernise without disrupting ongoing operations?
We use phased migration strategies, feature flags, and parallel-run periods to ensure continuity. Critical systems stay operational throughout the migration.
What is the difference between rehosting and refactoring?
Rehosting moves an application to the cloud with minimal changes, often called lift-and-shift. Refactoring modifies the application code to take advantage of cloud-native capabilities. The right choice depends on the application's strategic importance and the available engineering capacity.
How long does application modernisation take?
A single application replatforming can take four to eight weeks. A full portfolio modernisation is typically a multi-quarter programme. We sequence work to deliver value incrementally rather than waiting for a single large release.
What happens to data during migration?
We plan data migration as a separate workstream with validation checkpoints, rollback procedures, and zero-downtime strategies where required. Data integrity is non-negotiable.
Case Study
CMS Modernization on AWS
90% faster page loads after migrating from legacy Java and Vue 2 to Java 17 and Vue 3.
Contact
What is your legacy system costing you?
We analyse your application landscape and show you where modernisation delivers the fastest return.
Application Innovation
Related Application Innovation Topics
DevOps
Development and operations aligned around shared goals, automated pipelines, and a culture that ships reliably.
Learn moreIntegrations & Cloud APIs
Connect systems, eliminate data silos, and build APIs that let your applications communicate in real time.
Learn moreCloud-Native Development
Build applications designed for the cloud from the ground up: containers, Kubernetes, and CI/CD pipelines that deliver on the promise of cloud investment.
Learn moreMicroservices
Decompose monoliths into independently deployable services that scale, fail gracefully, and evolve without coordinating every release.
Learn moreTest Automation
Shift quality left. Automated tests in every pipeline stage mean fewer regressions, faster releases, and engineers who spend time building, not debugging.
Learn more