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Solution

App Mod & DevOps.

Ship faster. Break less. Scale confidently.

Modernise legacy applications and embed the DevOps habits that keep your team delivering. 6R framework. CI/CD from day one. AI-assisted where it pulls weight.

Legacy apps slow your business down: hard to change, expensive to maintain, impossible to scale. Onel modernises what's worth keeping and replaces what isn't, with the pipelines and governance to keep delivery safe afterwards.

Most people arrive here via a referral. If that's you, here's who to call.

Partner of the Year

HPE Hybrid IT Gold

2025

Recognition

CRN Fast 50

Five times · 2017–2025

Panel member

MAV · DPC

+ Procure Australasia

Framework

6R modernisation

Re-host · re-platform · re-architect

Pipeline

CI/CD from day one

Azure DevOps · GitHub Actions · GitLab

The challenge

Legacy applications are holding your business back.

Applications built a decade ago were designed for a different world: on-premises servers, manual deployments, teams that didn't move fast. Today's business demands continuous delivery, cloud scalability and security by default.

Modernising doesn't mean rewriting everything from scratch. Onel helps you make the right call for each application: re-host, re-platform, re-architect, or rebuild: then builds the DevOps habits that keep your team delivering fast, safely, forever.

01

Releases take weeks, not hours

When every deployment is manual and nothing is tested automatically, teams stop deploying often. Changes pile up until release night, which is exactly what makes release night dangerous.

02

High cost to maintain legacy code

Undocumented, tightly-coupled monoliths that no one wants to touch, consuming disproportionate developer time just to keep the lights on.

03

Apps that can't scale

On-premises apps designed for fixed capacity that fall over during peak demand, requiring manual intervention and emergency fixes.

04

Security gaps in delivery pipelines

No automated security scanning, hardcoded secrets, unpatched dependencies, and no visibility into what's running in production. Closed by our IT security services.

05

No visibility across the app portfolio

Applications managed inconsistently: different tools, different processes, no standard for versioning, testing, or deployment.

Services

What Onel delivers.

From assessing your application portfolio through to running your CI/CD pipelines. Onel covers the full modernisation and DevOps lifecycle.

Portfolio Assessment

Know what you have

A structured review of your application portfolio: mapping dependencies, assessing technical debt, scoring cloud readiness, and recommending a 6R strategy per application. For the wider technology decision, see IT strategy consulting.

  • →App & dependency mapping
  • →Technical debt & risk scoring
  • →Cloud readiness per application
  • →6R recommendation per app
  • →Prioritised modernisation roadmap

Application Lifecycle Management

Governance, code to prod

ALM frameworks giving your team visibility and control: from requirements through development, testing, deployment and retirement.

  • →Azure DevOps / Jira setup
  • →Branch strategy & code review
  • →Environment promotion workflow
  • →Release management
  • →Versioning & changelog standards

CI/CD Pipeline Engineering

Automate commit to prod

Pipelines that carry a change from commit through build, test and security scan to deployment without anyone running a step by hand. Deployments stop being events. Pipeline failures escalate to our IT infrastructure support services team.

  • →GitHub Actions / Azure Pipelines / GitLab
  • →Automated unit, integration, regression testing
  • →Security scanning (SAST, DAST, deps)
  • →Container image build & registry push
  • →Blue/green & canary deployments

Containers & Kubernetes

Package once. Run anywhere.

Containerise applications with Docker and orchestrate them on Kubernetes: Azure AKS, AWS EKS, or on-premises. Cloud-native by design. Landing zones are built by our cloud migration services team.

  • →Docker image design & optimisation
  • →Cluster design & deployment
  • →Azure AKS & AWS EKS managed clusters
  • →Helm chart development
  • →Ingress, service mesh & network policy

Code Refactoring & Re-architecture

Modernise the code, not just the platform

Platform migration alone doesn't fix bad code. Onel's engineers refactor legacy codebases: reducing technical debt, improving maintainability, making apps cloud-native.

  • →Legacy code review & refactoring
  • →Monolith decomposition into services
  • →API-first design & implementation
  • →Database modernisation
  • →Twelve-factor app principles

AI-Assisted Development

Accelerate developer velocity

AI coding tools have changed how software is built. Onel helps teams adopt and get maximum value from Copilot, Claude Code and AI development tools, output quality and speed up, headcount steady.

  • →GitHub Copilot rollout & training
  • →Claude Code for complex refactoring
  • →AI-assisted code review & test generation
  • →Guardrails & governance for AI code
  • →Developer upskilling workshops

Delivery pipeline

Every release automated. Every step validated.

The Onel standard CI/CD pipeline covers every stage from code commit to production, with security checks and quality gates at every step. A failed test, a high-severity finding or a policy violation stops the pipeline before bad code reaches production.

01

Code

  • Git / GitHub
  • Branch strategy
  • PR review
  • AI Copilot

02

Build

  • GitHub Actions
  • Azure Pipelines
  • Docker build
  • Artifact publish

03

Test

  • Unit tests
  • Integration tests
  • Cypress E2E
  • Load testing

04

Security

  • SAST (Sonar)
  • DAST (OWASP ZAP)
  • Trivy / Snyk
  • Secret scanning

05

Deploy

  • Dev / UAT / Prod
  • Blue/green
  • Canary release
  • Auto rollback

06

Observe

  • Azure Monitor
  • App Insights
  • Grafana
  • PagerDuty

Modernisation strategy

The 6Rs, the right move for every application.

Not every application should be modernised the same way. Onel uses the 6R framework to assess each application individually and recommend the approach that delivers the best business outcome.

R1

Rehost

Lift & shift

Move the application to cloud infrastructure with minimal changes: same code, same architecture, just running on cloud VMs.

Best for: apps that work fine but need to move fast, or where code changes carry high risk.

R2

Replatform

Lift, tinker & shift

Targeted optimisations during the move, managed PaaS database, containerised app tier, without changing the core application.

Best for: apps that benefit from managed services but don't need architectural changes.

R3

Refactor

Re-architect

Redesign and rewrite parts of the application to take full advantage of cloud-native capabilities, breaking monoliths into services, adopting APIs.

Best for: apps with high business value constrained by legacy architecture.

R4

Repurchase

Drop & shop

Replace the application entirely with a commercial SaaS product: Salesforce, ServiceNow, Microsoft 365 equivalents.

Best for: commodity applications where buying is more cost-effective than maintaining custom code.

R5

Retain

Keep as-is

Some applications aren't worth migrating right now: compliance constraints, recent investment, end-of-life timeline. Retain and revisit later.

Best for: apps approaching end-of-life, recently rebuilt, or under regulatory holds.

R6

Retire

Decommission

Identify and decommission applications no longer used or superseded: freeing up resources, reducing attack surface, eliminating maintenance burden.

Best for: redundant, duplicate or unused applications consuming resources without delivering value.

DevSecOps

Security embedded not bolted on at the end.

Security added after development is expensive to fix and easy to miss. DevSecOps embeds security checks into every stage of the delivery pipeline, catching vulnerabilities automatically before they reach production.

SAST

Static code analysis

Every commit scanned for SQL injection, XSS, insecure functions and hardcoded secrets, before the code is even built.

SonarQube · Semgrep · GHAS

Dependencies

Dependency & container scan

Open source libraries and container base images scanned for CVEs every build. High-severity vulnerabilities block deployment.

Snyk · Trivy · Dependabot · Grype

DAST

Dynamic testing

Running applications probed for injection flaws, auth weaknesses and misconfigs that only appear at runtime.

OWASP ZAP · Burp · Nuclei

Secrets

Secrets management

No credentials in code, ever. Secrets stored in Azure Key Vault or HashiCorp Vault, injected at runtime, rotated automatically.

Azure Key Vault · HashiCorp Vault

Policy

Policy as code

Policy written as code and enforced at the cluster, so a non-compliant resource is refused at deployment rather than found in an audit six months later.

OPA / Gatekeeper · Azure Policy · Kyverno

SBOM

Supply chain security

SBOM generated for every build, a complete inventory of all components, libraries and versions for vulnerability tracking and compliance.

Syft · Cosign · GitHub Attestations

Our approach

How Onel delivers modernisation projects.

Discover & assess

We map the portfolio and its dependencies first, then pick a 6R path for each application. Some get rehosted, some get rebuilt, and a few are best left exactly where they are.

Design & plan

Target architecture, ALM framework, pipeline design, environment strategy and delivery plan, agreed with your team before we build.

Build & modernise

Build the CI/CD pipeline, containerise the application, refactor the code, deploy through Dev → Test → UAT → Production with automated gates.

Handover & operate

Documentation, knowledge transfer and optional ongoing support. Your team owns the outcome, Onel available to manage if needed.

Toolchain

The tools we work with.

Our engineers are certified across the main DevOps and container toolchains, and use them on client work rather than in a lab.

Source control & ALM

GitHub Azure DevOps GitLab Bitbucket Jira Confluence

CI/CD pipelines

GitHub Actions Azure Pipelines GitLab CI Jenkins ArgoCD Flux

Containers & orchestration

Docker Azure AKS AWS EKS Helm Istio Kustomize

IaC & config

Terraform Azure Bicep Ansible Packer Pulumi Azure Policy

Security & DevSecOps

SonarQube Snyk Trivy OWASP ZAP Semgrep Cosign

Observability

Azure Monitor App Insights Prometheus Grafana OpenTelemetry PagerDuty

Languages & frameworks

.NET / C# Python Node.js React TypeScript PowerShell

AI dev tools

GitHub Copilot Claude Code Cursor Claude API OpenAI API Azure OpenAI

Code stays yours

Your repos. Your pipelines. Your team.

Source code lives in your Git repositories, pipelines run on your platform, and runbooks transfer at handover. We embed alongside your engineers and skill them up, the modernisation goal isn't ongoing dependence on Onel, it's a team that can ship without us.

Read the FAQ →

FAQ

Questions we get before first call.

If your question isn't answered here, the fastest way to a clear answer is a 15-minute phone call. No sales pitch, no obligation.

1300 609 101 →
We have a legacy app that "just works", should we modernise it at all?
Not necessarily. The 6R framework includes "retain" as a valid answer - if an app is stable, low-change, and the underlying platform is supported, there's no business case to touch it. We modernise where there's a real cost (slow delivery, security gap, looming end-of-life) - not as a default. The assessment tells you which apps fall into which bucket.
Do you replace our developers, or work with them?
Work with. Onel embeds engineers alongside your team to set up the pipelines, the patterns and the guardrails - then transitions ownership to you. Most clients keep an ongoing managed pipeline relationship, but the application work stays in-house. We're not trying to become your dev shop.
Where does AI-assisted development actually pull weight, and where doesn't it?
It's strong on boilerplate, test scaffolding, doc generation, IaC drafts, and code review augmentation. It's weak on novel architecture decisions, anything touching production data without supervision, and security-critical paths. We use Copilot, Cursor and Claude Code with humans in the loop - and we say so in the pipeline; we don't pretend it's all hand-written.

Get started

Ready to modernise your apps and accelerate delivery?

Talk to one of our engineers. We'll assess your application portfolio and show you a clear, prioritised path to faster, safer, more scalable delivery, no obligation.